error: style attribute 'attr/colorPrimary' not found
Make sure you have not missed appcompat implementation in build.gradle(app)
implementation ‘com.android.support:appcompat-v7:28.0.0’
or
implementation 'androidx.appcompat:appcompat:1.2.0'
if using androidx
This error commonly shows up when
androidx.appcompat:appcompat
and
com.google.android.material:material
versions do not match. Check whether you updated one and not the other
Had this in a library module, which suddenly stopped resolving the theme.
dependencies {
implementation "com.google.android.material:material:1.3.0"
}