Found a solution for this.
Looks like google play billing version 5.0.0 and above dont have those symbols.
I have version 5.1 but still referring to the older billing lib version.
I upgraded the billing version reference to 6.0.0 actually and that worked.
Look for this library com.android.billingclient:billing in ur game or plugin code and change the version to 5.0.0 or above. that would work.