Just today I was on Android Studio working on a project, when my computer suddenly crashed in the middle of an upload.
Ever since I rebooted it, the Gradle Console has been returning this same error:
JsonReader.setLenient(true) to accept malformed JSON at line 1 column
Clean your project using :
Go to Build -> Clean Project
Then Rebuild again using :
Go to Build -> Rebuild Project
I hope it might help you !