I hope you’re well. I noticed that my results on https://web.dev/measure/ have changed suddenly today and I haven’t been able to track down why. The SEO result was 100 this morning, and I haven’t changed any of the items listed, so wanted to run it by you in case it is somehow theme related?
Turns out that the EasyWP cache plugin had crashed and somehow got removed from my dashboard, so a few customer service emails later to the host and it’s been restored, and the errors have gone. Sorry for the red herring. I often find it very hard to track down what is happening when things go wrong! Thanks again for your help.