How To Fix 414 Request URI Too Large in Apache

[ImperialTrader]

Hello,
How To Fix 414 Request URI Too Large in Apache?

I did many searches and I noticed that I should increase the request size limit in Apache
I should add this line in the Virtual host or Apache configuration page (LimitRequestLine 10000)
Where I can find these files?

Note: I get this error for 1 website only on my server, but all the other websites are working fine.

 

[quietFinn]

In WHM -> Service Configuration -> Apache Configuration -> Include Editor -> Pre Virtualhost Include -> All versions

 

[ImperialTrader]

In WHM -> Service Configuration -> Apache Configuration -> Include Editor -> Pre Virtualhost Include -> All versions

I added this line (LimitRequestLine 10000), but the issue still exists!
Also, there are other URLs getting (404 error) and the URL is working fine
So, I think the issue is not in the (Limit Request Line), correct?

 

[cPRex]

Did you manually restart Apache after adjusting that include? When using the Include Editor interface, we don't restart Apache for you, but provide this warning:

Your Apache configuration include files have been saved, and httpd.conf has been rebuilt. For your changes to take effect, Apache must be restarted.