I’m guessing the errors you are seeing the microsofttranslator ones which i look at as 1 instead of three. They have been eliminated as part of the issue.
I did turn off the Fastest Cache and all minify plugins but reactivated later at mgmnt request because of slow page load. They were off for 3 hours, cache was cleared and site checked for new errors. again the only only being depreciated java which is part of the site optimization and like you said a non issue,presumably.
I am not well versed in minification but am aware that it can cause issues on the site/ page function. Any suggestions?