Could you try to flush your site’s cache, to make sure it doesn’t look for files that were renamed in a plugin update? That should do the trick.
Let me know how it goes.
I clicked “hide message” and now the message is gone. Don’t know how to get it back. Emptied all caches and the message is still gone. I guess maybe its ok now.
Same error message came back today. Flushing the cache this time doesn’t make the message go away. Note that the message says the error occurred “recently”, so I think it’s just letting me know that this happened sometime in the past, since the last time I cleared the cache.
That seems to be a common issue with W3 Total Cache. Here is what I found in the plugin support forums:
https://wordpress.org/support/topic/recently-an-error-occurred-while-creating-the-css-js-minify-cache-3?replies=26#post-5460429
“This error simply suggests that something has changed since minify was initially configured. Specifically, that the file in question no longer exists.
Future releases will improve the handling of this but for all practical purposes, this is merely a cosmetic annoyance and can be ignored. If you don’t want to see it, select “Disabled” from the Minify error notification dropdown menu.”
So it should be okay to just ignore the error.
Ok great. Thanks for finding that out for me.