TD Composer Not working

I am unable to edit my site in td composer. URL – https://gjconsulting.co.in/wp-admin/post.php?post_id=833&td_action=tdc&tdbTemplateType=page&prev_url=%2F%2Fgjconsulting.co.in%2F

ERROR MESSAGE – This site can’t be reachedThe webpage at https://gjconsulting.co.in/wp-admin/post.php?post_id=833&td_action=tdc&tdbTemplateType=page&prev_url=%2F%2Fgjconsulting.co.in%2F might be temporarily down or it may have moved permanently to a new web address.
ERR_HTTP2_PROTOCOL_ERROR

Hi,

I followed all the requirements mentioned in the docs and disabled all plugins except the theme plugins. There are no errors in the system status as well – https://gjconsulting.co.in/wp-admin/admin.php?page=td_system_status.
But td composer is still not working.

Hello!

I keep getting internal server error on my website. So I deactivated all plugins and reactivate them one by one. And I realized that each time I deactivate td-composer, my site works but displays html code. However, when i reactivate td-composer, the site crashes with this error message:
Internal Server Error
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at webmaster@techtimesafrica.workclick.com to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

OR

ERROR 504 – GATEWAY TIMEOUT
Why am I seeing this page?
The server that your request has reached is acting as a gateway or proxy to fulfil the request made by your client.

Web Browser => Web Front-End => Web Back-End

This server (Web Front-End) received an invalid response from an upstream (Web Back-End) server it accessed to fulfil the request.

I am waiting for the response Vlad S

please help me.

I need to update my site but I couldn’t.

please help me.