I want to load a confirmation url (Its encoded) in browser ,But when i open the link and extra "=" sybmol appending

Recieved url

http://localhost:4200/login?redirectURI%3Dvisitor%2Fverify-health-status%26tan%3DdcHzAsqVJW%26lang%3Den

Once loaded in browser

http://localhost:4200/login?redirectURI%3Dvisitor%2Fverify-health-status%26tan%3DdcHzAsqVJW%26lang%3Den=