android DexArchiveMergerException: Unable to merge dex

Question

I have recently updated my android sdk version from 25 to 26. After updating the app, i\'m receiving this error:

Error:Execution failed         


        

Answer 1

Caused by: com.android.dex.DexException: Multiple dex files define  Lcom/squareup/picasso/Cache;

Do not use JAR files when an artifact dependency is available.

Replace:

implementation files('libs/picasso-2.5.2.jar')

with:

implementation 'com.squareup.picasso:picasso:2.5.2'

This should allow Gradle to only include one copy of the Picasso classes, whereas now you are trying to include two copies of those classes.