The fix was to
gem uninstall mysql2
then reinstall it again with
bundle # gem install mysql2 would also work
This recompiles and resolves the reference that had been left over from having mysql 5.7.9 installed.
The fix was to
gem uninstall mysql2
then reinstall it again with
bundle # gem install mysql2 would also work
This recompiles and resolves the reference that had been left over from having mysql 5.7.9 installed.