Era un proyecto que solía funcionar bien en el pasado, pero después de actualizar, aparecen los siguientes errores.

 plugins { id 'com.android.application' id 'kotlin-android' } android { compileSdkVersion 30 buildToolsVersion "30.0.3" defaultConfig { applicationId "com.example.retrofit_test" minSdkVersion 21 targetSdkVersion 30 versionCode 1 versionName "1.0" testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner" } buildTypes { release { minifyEnabled false proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro' } } compileOptions { sourceCompatibility JavaVersion.VERSION_1_8 targetCompatibility JavaVersion.VERSION_1_8 } kotlinOptions { jvmTarget = '1.8' } } dependencies { // implementation 'com.google.guava:guava:30.1.1-jre' implementation 'com.google.guava:guava:30.1-jre' // implementation 'org.jetbrains.kotlin:kotlin-stdlib:1.5.30-M1' implementation 'androidx.core:core-ktx:1.6.0' implementation 'androidx.appcompat:appcompat:1.3.1' implementation 'com.google.android.material:material:1.4.0' implementation 'androidx.constraintlayout:constraintlayout:2.1.0' implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5' implementation 'androidx.navigation:navigation-ui-ktx:2.3.5' implementation 'androidx.lifecycle:lifecycle-livedata-ktx:2.3.1' implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.3.1' implementation 'androidx.navigation:navigation-fragment-ktx:2.3.5' implementation 'androidx.navigation:navigation-ui-ktx:2.3.5' implementation 'com.squareup.retrofit2:retrofit:2.9.0' implementation 'com.google.code.gson:gson:2.8.7' implementation 'com.squareup.retrofit2:converter-gson:2.9.0' implementation 'com.squareup.okhttp3:logging-interceptor:4.9.1' implementation 'com.github.bumptech.glide:glide:4.12.0' implementation 'android.arch.persistence.room:guava:1.1.1' annotationProcessor 'com.github.bumptech.glide:compiler:4.11.0' testImplementation 'junit:junit:4.13.2' androidTestImplementation 'androidx.test.ext:junit:1.1.3' androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0' }

Si necesitamos más código fuente para verificar, lo actualizaré.

El contenido del error es el siguiente.

Ocurrió un problema al configurar el proyecto raíz 'Retrofit_Test'.

 Could not resolve all artifacts for configuration ':classpath'. Could not find org.jetbrains.kotlin:kotlin-gradle-plugin:1.5.30. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-gradle-plugin/1.5.30/kotlin-gradle-plugin-1.5.30.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : Could not find org.jetbrains.kotlin:kotlin-stdlib-jdk8:1.4.32. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-stdlib-jdk8/1.4.32/kotlin-stdlib-jdk8-1.4.32.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:repository:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:aaptcompiler:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:shared:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.lint:lint-model:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-host-retention-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder-model:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:gradle-api:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 > com.android.tools:common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.analytics-library:tracker:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.build:manifest-merger:30.0.2 Could not find org.apache.httpcomponents:httpmime:4.5.6. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/apache/httpcomponents/httpmime/4.5.6/httpmime-4.5.6.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdklib:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:crash:30.0.2 Could not find commons-io:commons-io:2.4. Searched in the following locations: - https://dl.google.com/dl/android/maven2/commons-io/commons-io/2.4/commons-io-2.4.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 Could not find org.ow2.asm:asm:7.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/ow2/asm/asm/7.0/asm-7.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:gradle-api:7.0.2 Could not find org.ow2.asm:asm-analysis:7.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/ow2/asm/asm-analysis/7.0/asm-analysis-7.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 Could not find org.ow2.asm:asm-commons:7.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/ow2/asm/asm-commons/7.0/asm-commons-7.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 Could not find org.ow2.asm:asm-util:7.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/ow2/asm/asm-util/7.0/asm-util-7.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 Could not find org.bouncycastle:bcpkix-jdk15on:1.56. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/bouncycastle/bcpkix-jdk15on/1.56/bcpkix-jdk15on-1.56.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.build:apkzlib:7.0.2 Could not find org.glassfish.jaxb:jaxb-runtime:2.3.2. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/glassfish/jaxb/jaxb-runtime/2.3.2/jaxb-runtime-2.3.2.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdklib:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:repository:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 Could not find net.sf.jopt-simple:jopt-simple:4.9. Searched in the following locations: - https://dl.google.com/dl/android/maven2/net/sf/jopt-simple/jopt-simple/4.9/jopt-simple-4.9.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 Could not find com.squareup:javapoet:1.10.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/squareup/javapoet/1.10.0/javapoet-1.10.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 Could not find com.google.protobuf:protobuf-java:3.10.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/protobuf/protobuf-java/3.10.0/protobuf-java-3.10.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.ddms:ddmlib:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:aapt2-proto:7.0.2-7396180 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:aaptcompiler:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-device-provider-gradle-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-host-retention-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:bundletool:1.6.0 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:shared:30.0.2 > com.android.tools.analytics-library:protos:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.analytics-library:tracker:30.0.2 Could not find com.google.protobuf:protobuf-java-util:3.10.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/protobuf/protobuf-java-util/3.10.0/protobuf-java-util-3.10.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:bundletool:1.6.0 Could not find com.google.code.gson:gson:2.8.6. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/code/gson/gson/2.8.6/gson-2.8.6.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdklib:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:shared:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.build:manifest-merger:30.0.2 Could not find io.grpc:grpc-core:1.21.1. Searched in the following locations: - https://dl.google.com/dl/android/maven2/io/grpc/grpc-core/1.21.1/grpc-core-1.21.1.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 Could not find io.grpc:grpc-netty:1.21.1. Searched in the following locations: - https://dl.google.com/dl/android/maven2/io/grpc/grpc-netty/1.21.1/grpc-netty-1.21.1.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 Could not find io.grpc:grpc-protobuf:1.21.1. Searched in the following locations: - https://dl.google.com/dl/android/maven2/io/grpc/grpc-protobuf/1.21.1/grpc-protobuf-1.21.1.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 Could not find io.grpc:grpc-stub:1.21.1. Searched in the following locations: - https://dl.google.com/dl/android/maven2/io/grpc/grpc-stub/1.21.1/grpc-stub-1.21.1.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 Could not find com.google.crypto.tink:tink:1.3.0-rc2. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/crypto/tink/tink/1.3.0-rc2/tink-1.3.0-rc2.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 Could not find com.google.flatbuffers:flatbuffers-java:1.12.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/flatbuffers/flatbuffers-java/1.12.0/flatbuffers-java-1.12.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 Could not find org.tensorflow:tensorflow-lite-metadata:0.1.0-rc2. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/tensorflow/tensorflow-lite-metadata/0.1.0-rc2/tensorflow-lite-metadata-0.1.0-rc2.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 Could not find org.bouncycastle:bcprov-jdk15on:1.56. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/bouncycastle/bcprov-jdk15on/1.56/bcprov-jdk15on-1.56.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.build:apkzlib:7.0.2 Could not find com.google.guava:guava:30.1-jre. Searched in the following locations: - https://dl.google.com/dl/android/maven2/com/google/guava/guava/30.1-jre/guava-30.1-jre.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:aaptcompiler:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:crash:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.analytics-library:shared:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > androidx.databinding:databinding-compiler-common:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder-test-api:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.utp:android-test-plugin-result-listener-gradle-proto:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:bundletool:1.6.0 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:gradle-api:7.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 > com.android.tools:common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.analytics-library:tracker:30.0.2 Could not find org.jetbrains.kotlin:kotlin-reflect:1.4.32. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/jetbrains/kotlin/kotlin-reflect/1.4.32/kotlin-reflect-1.4.32.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 Could not find javax.inject:javax.inject:1. Searched in the following locations: - https://dl.google.com/dl/android/maven2/javax/inject/javax.inject/1/javax.inject-1.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:bundletool:1.6.0 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 Could not find net.sf.kxml:kxml2:2.3.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/net/sf/kxml/kxml2/2.3.0/kxml2-2.3.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.ddms:ddmlib:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.lint:lint-model:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.layoutlib:layoutlib-api:30.0.2 project : > com.android.tools.build:gradle:7.0.2 > com.android.tools.build:builder:7.0.2 > com.android.tools.build:manifest-merger:30.0.2 Could not find org.jetbrains.intellij.deps:trove4j:1.0.20181211. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/jetbrains/intellij/deps/trove4j/1.0.20181211/trove4j-1.0.20181211.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 Could not find xerces:xercesImpl:2.12.0. Searched in the following locations: - https://dl.google.com/dl/android/maven2/xerces/xercesImpl/2.12.0/xercesImpl-2.12.0.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration. Required by: project : > com.android.tools.build:gradle:7.0.2 > com.android.tools:sdk-common:30.0.2 Could not find org.apache.commons:commons-compress:1.20. Searched in the following locations: - https://dl.google.com/dl/android/maven2/org/apache/commons/commons-compress/1.20/commons-compress-1.20.pom If the artifact you are trying to retrieve can be found in the repository but without metadata in 'Maven POM' format, you need to adjust the 'metadataSources { ... }' of the repository declaration.