YouTube plugin not working

I haven’t used YouTube plugin for a while - it used to work OK but this morning, all searches return empty and “recently played” files don’t play either. I went to LMS settings and saw that the plugin had been updated and the server had to be restarted, so did that, saw YouTube plugin had gone from 101 to 110 - but still not working. LMS 7.9.2 on Raspberry Pi under Any ideas? (Sorry for duplicate post but thought new thread was appropriate)