I can't create a page using Page Layout. show Page : Someting went wrong! Request failed with status code 500 .

I can't create a page using Page Layout. show Page : Someting went wrong! Request failed with status code 500 .

Hi there!
Thank you for bringing this to our attention, and I sincerely apologize for the inconvenience caused.
To assist you more effectively, may I kindly request temporary administrative access to your site? This will allow me to thoroughly investigate and resolve the issue for you.
Before sharing the credentials, I strongly recommend taking a complete backup of your site to ensure all data remains secure.
Looking forward to your response.
Best regards
I'm glad you replied. I'm glad you got access to my website.
I can not access your site
What country are you coming from?
Bangladesh
I'm not sure if my host is blocking access. Can you tell me how to check and fix it?
Please contact with your hosting provider to resolve the issue
I want your Public IPv4 to config allow policy
Check the hidden content
Allowed policy. You can test backend access.
Do you have a firewall in your server?
have
Could you please disable the firewall and check if the issue solved?
I checked the web server and found that the status firewall is inactive.
What about modSecurity?