Move mavenCentral() above jcenter().
do a clean/build on your project.
comment out jcenter()
By moving mavenCentral() above jcenter(), mavenCentral() now becomes the primary repository for all non Google artifacts. By doing a clean and build, all artifacts are now moved to mavenCentral().
I had to look this up and tried it. I went from all heck breaking loose after I removed jcenter() to being able to build my final project for school again.