Hi Can anyone help me here ?
You should first contact your host to find the error.
Then you should contact the theme author (or plugin author?) if the error is relevant to their item, and they can advise.
If you have FTP access to your website (which should be true), login to your FTP and look for error_log file at the root of your domain directory (usually httpdocs or public_html). Download the file, and you will see what causes this issue.
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