Hi Frank,
Thanks for your help. Yes, I was using Async Javascript plugin. I was given to believe that it usually works will with Autoptimize, but I disabled the plugin and now it seems to be working fine with no errors.
Originally I used the Async Javascript wizard to implement the recommended settings (async on javascript, defer on jquery) and followed the instructions to integrate the two plugins. So, should I not use Async Javascript at all if I want to use Autoptimize or do I do some trial and error to figure out if different settings work better or if there are scripts that shouldn’t be deferred or asynced?
Where would you go next with this? Thanks for your help!
Jessica