Doing below works: Disable all plugins. Using default .htaccess if your server used apache for webserver. Enable WP_DEBUG in your WordPress to see current error. Make sure about that page using the Page format? Otherwise, delete this page and try to create new page.
You need to enable PHP errors or look on it in an error log. There you will find a file and row where input was started. If it will show you that input was started in row #1 that means this file has unprintable symbols before <?php
MCAPI.class.php showing some error
here is explanation of the 431 error. https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/431
From my experience, you had far, far too many plugins. Disable everything, choose one of the twenty**** default themes and try again. You should also check your server log and see if you can see anything in there that would help (and post it here). Lastly, take a backup of your entire site (code, uploads, … Read more
I have fixed the problem through correction of the jQuery code. This is an example jQuery( document ).ready(function($) { // Instantiates the variable that holds the media library frame. var file_frame, meta_image_preview, meta_image; $(‘.image-upload’).on(‘click’, function( event ){ meta_image_preview = $(this).parent().parent().children(‘.image-preview’); meta_image = $(this).parent().children(‘.meta-image’); event.preventDefault(); // If the media frame already exists, reopen it. if ( … Read more
They are getting called in the Open Graph (OG) tags. Please check any plugin that is generating those or remove them if they are hard-coded.
You can tell by the ID on the <link href=”https://wordpress.stackexchange.com/questions/287569/… tag that the stylesheet”s ID is mesmerize-style, so you should be able to dequeue with this function in your child theme. wp_dequeue_style( ‘mesmerize-style’ ); Make sure it’s hooked into wp_enqueue_scripts with a higher priority than the parent theme’s hook (probably 10). That’s the general answer … Read more
It’ an error in the ‘flatsome’ theme. You need to contact the theme developer via their support page. Unless you want to dig around in their code, fix something, then have a theme update break things again. (Not recommended, but if you are headed that way, make a child theme). The theme support page is … Read more
Use mysql_real_escape_string() instead mysqli_real_escape_string. For more information CLICK HERE mysqli_real_escape_string ($link ,$source ) // $link is your connection variable