My blog is whatvwant.com .Whenever I activate w3 total cache, my website gives 500 internal server error. My error.log file shows like this
[30-Mar-2015 12:58:25 UTC] PHP Warning: mysqli_real_connect(): The server requested authentication method unknown to the client [mysql_old_password] in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-includes/wp-db.php on line 1386
[30-Mar-2015 12:58:25 UTC] PHP Warning: mysqli_real_connect(): (HY000/2054): The server requested authentication method unknown to the client in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-includes/wp-db.php on line 1386
[30-Mar-2015 12:58:25 UTC] PHP Deprecated: mysql_connect(): The mysql extension is deprecated and will be removed in the future: use mysqli or PDO instead in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-includes/wp-db.php on line 1416
[30-Mar-2015 12:58:25 UTC] PHP Warning: file_get_contents(): http:// wrapper is disabled in the server configuration by allow_url_fopen=0 in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-content/plugins/magic-wp-coupons/admin/includes/data_options.php on line 157
[30-Mar-2015 12:58:25 UTC] PHP Warning: file_get_contents(http://magic-wp-coupons.designsvalley.com/product-category/templates/feed/): failed to open stream: no suitable wrapper could be found in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-content/plugins/magic-wp-coupons/admin/includes/data_options.php on line 157
[30-Mar-2015 12:58:25 UTC] PHP Notice: Trying to get property of non-object in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-content/plugins/magic-wp-coupons/admin/includes/data_options.php on line 163
[30-Mar-2015 12:58:25 UTC] PHP Notice: Trying to get property of non-object in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-content/plugins/magic-wp-coupons/admin/includes/data_options.php on line 163
[30-Mar-2015 12:58:25 UTC] PHP Warning: Invalid argument supplied for foreach() in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-content/plugins/magic-wp-coupons/admin/includes/data_options.php on line 163
[30-Mar-2015 12:58:26 UTC] PHP Notice: convert_to_screen(), add_meta_box() was called incorrectly. Likely direct inclusion of wp-admin/includes/template.php in order to use add_meta_box(). This is very wrong. Hook the add_meta_box() call into the add_meta_boxes action instead. Please see Debugging in WordPress for more information. (This message was added in version 3.3.) in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-includes/functions.php on line 3547
[30-Mar-2015 12:58:26 UTC] PHP Notice: convert_to_screen(), add_meta_box() was called incorrectly. Likely direct inclusion of wp-admin/includes/template.php in order to use add_meta_box(). This is very wrong. Hook the add_meta_box() call into the add_meta_boxes action instead. Please see Debugging in WordPress for more information. (This message was added in version 3.3.) in /hermes/bosnaweb09a/b2664/ipg.tocreatesitecom/whatvwant/wp-includes/functions.php on line 3547
Is there any solution. Please let me know. I want to use w3 total cache plugin in my blog.
