Hello. I was unable to access http://tosa.co.in/ Please provide a link to the website page with the problem.
Are you using some third party code on the site?

Hai Sir,

No I am not using Thirdparty software only using website x5 pro  added database viewer  to connect databased records to show them.   still same problem...please resolve sir

https://telanganaortho.com/membership-directory.html

Check your database connection settings.
Look at the error logs and access logs on the hosting.
Try different versions of PHP. For example, 7.4, 8.0 and 8.1.

Sir,

I try to change different PHP Versions but error has same. even I try to change PHP Version to 8 & 8.1 same error has been displaying...

i tried so many versions but error is same ...!!!! Please resolve this 

I sent a notification about your question to the company employees, expect an answer from them here in the comments.

"Look at the error logs and access logs on the hosting." - Have you tried this?

hello sir,

still company employees researching...please reply soon ..here i need to display membership details with search option.. or give me csv viewer option for search so that i can display membership number they can easy to search.. or give root to display with search option 

I suggest you try the amazing csv-viewer made by Derek Eder.

It is easy to use and easy to set up.

Can be downloaded from here: https://github.com/derekeder/csv-to-html-table

And a demo can be seen here: https://csv-to-html-table.netlify.app/

Hello

I've tried entering the linked page and it seems to work now. Can you please confirm that?

I remain available here

Stefano

still same problem i am unable to do what u suggested

Hello Vemunoori

In this case, can you let me know on what page can I see the error?

If I try here:

https://telanganaortho.com/membership-directory.html

I see it correctly, so it must be a different page. Please link that to me here

I remain available 

Stefano