Así que estoy creando una aplicación web usando Express.JS y MongoDB y cuando trato de ejecutarla localmente, funciona, pero cuando la ejecuto con mi máquina aws Ubuntu 20.04 me da el siguiente error:

 (node:13452) UnhandledPromiseRejectionWarning: TypeError: [objectOptions,urlOptions,exports.DEFAULT_OPTIONS].flatMap is not a function at parseOptions (/home/ubuntu/tylertv/node_modules/mongodb/lib/connection_string.js:258:77) at new MongoClient (/home/ubuntu/tylertv/node_modules/mongodb/lib/mongo_client.js:62:63) at Promise (/home/ubuntu/tylertv/node_modules/mongoose/lib/connection.js:784:16) at new Promise (<anonymous>) at NativeConnection.Connection.openUri (/home/ubuntu/tylertv/node_modules/mongoose/lib/connection.js:781:19) at _mongoose._promiseOrCallback.cb (/home/ubuntu/tylertv/node_modules/mongoose/lib/index.js:342:10) at Promise (/home/ubuntu/tylertv/node_modules/mongoose/lib/helpers/promiseOrCallback.js:32:5) at new Promise (<anonymous>) at promiseOrCallback (/home/ubuntu/tylertv/node_modules/mongoose/lib/helpers/promiseOrCallback.js:31:10) at Mongoose._promiseOrCallback (/home/ubuntu/tylertv/node_modules/mongoose/lib/index.js:1181:10) (node:13452) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). (rejection id: 2) (node:13452) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

No tengo idea de por qué esto está haciendo esto, todo lo que he instalado es mongodb, npm y node.

https://www.github.com/tttylerr/tylertv

^ Mi código fuente es server.js principalmente