Manjul

Tried running this?

UPDATE <code>wp_posts</code> SET guid = replace(guid, 'oldurl','newurl');
UPDATE <code>wp_posts</code> SET post_content = replace(post_content, 'oldurl', 'newurl');
UPDATE <code>wp_postmeta</code> SET meta_value = replace(meta_value,'oldurl','newurl');

Since you said you have access to your webhosting account, I assume you have access to your wp-config.php file and can make new files too.
you can list what’s in your user’s table with
SELECT * FROM <wp_prefix>_users
use this in seperate php file and see what you get

I am having same error. In Inspect element, it shows, “src(unknown)”