Aapt2Exception: AAPT2 error

[rgodlontonshaw]

I get this AAPT error when attempting to install this library.

error: duplicate value for resource 'attr/textColor' with config ''.
Message{kind=ERROR, text=error: duplicate value for resource 'attr/textColor' with config ''., sources=[/Users/rgodlonton-shaw/.gradle/caches/transforms-1/files-1.1/appcompat-v7-27.1.1.aar/7a498f99c59ae0ae784d1cb827bc1653/res/values/values.xml:251:5-69], original message=, tool name=Optional.of(AAPT)}