Σας ευχαριστώ για τη βοήθεια, το πρόβλημα όντως διορθώθηκε.
@dualcube thank you for the fast reply!
This is very strange then, because I disabled all plugins except Woocommerce and WC Catalog Enquiry and used Twenty Nineteen theme. Still I had the same two errors that disappeared when I disabled your plugin and we tested it in the new WordPress 5.2.2 version as well. So it couldn’t be a theme conflict either and it definitely seems that it is due to the WC Catalog Enquiry plugin.
Perhaps even though your plugin doesn’t use cURL, it conflicts with its usage in WordPress? If you have any other ideas for us to test, feel free to let me know because we are stumped at the moment.
