Same here. I had Google TTS working but as soon as I install misc-gcal1 it stops working. Removing Gcal makes TTS start working again. It is also impossible for me to get Gcal installation to work properly. Maybe that is because i have TTS installed, what do I know? I made another thread about that:
https://community.openhab.org/t/google-calendar-scheduler-no-instructions-in-log-file/81934