Customizer Not Working in Astra Theme

Dear Astra Support Team,

I am using the Astra theme on my website, and I am experiencing an issue where the Customizer does not open. Upon checking the browser console, I noticed the following error:

Failed to load resource: net::ERR_HTTP2_PROTOCOL_ERROR

To troubleshoot, I have already tried the following steps:

1. Updated all plugins and reinstalled WordPress.
2. Deactivated all plugins to rule out conflicts.
3. I have increase WP_MEMORY_LIMIT to 512.
4. I have also set set_time_limit.
5. I have also enabled debug log to check errors but no errors found.
6. Switched to the Twenty Twenty-One theme, where the Customizer works perfectly.

Despite these efforts, the issue persists only with the Astra theme.

Could you please assist me in resolving this issue? Let me know if you need additional details or access to debug further.

Thank you for your help!

Best regards,

Surbhi Jain

The page I need help with: [log in to see the link]