A have the following error and searched a lot to solve it, but can't get hold of what versions to use and what to do.
The library com.google.firebase:firebase-iid is being requested by various other libraries at [[16.2.0,16.2.0]], but resolves to 15.1.0.
remove
implementation 'com.google.firebase:firebase-messaging:17.0.0' from your app gradle
and if someone is facing error like
'com.android.support:appcompat-v7' has different version for the compile (26.1.0) and runtime (27.0.1) classpath
then
under your project level gradle file
subprojects { project.configurations.all { resolutionStrategy.eachDependency { details -> if (details.requested.group == 'com.android.support' && !details.requested.name.contains('multidex') ) { details.useVersion "26.1.0" } } } } add above lines to bottom of Project level gradle file
