Follow the simple steps to recover from the above wordpress upgrade error step 1 .Create a folder, which may be missing: /wp-content/mu-plugins step 2. Create a php file inside that folder and name upgrade_fix.php put the following code into the php file and save add_filter(‘https_ssl_verify’, ‘__return_false’); add_filter(‘https_local_ssl_verify’, ‘__return_false’); step3. Go directly and run the network upgrade again,…