When running the project today, an error was reported, as follows:
AAPT: error: resource android:attr/lStar not found.
I have increased the version of appcompat in the project , but I am using java, and it can run normally if the version is lowered
implementation 'androidx.appcompat:appcompat:1.5.1'
changed to
implementation 'androidx.appcompat:appcompat:1.2.0'