I can not open URL how custom indicators work

[chiper]

Hi Admin. Glad to talk with you
i open https://fxdreema.com/help/-/working%20w ... indicators
want read about custom indicators and on top on screen
**Are you prepared?
If you don't know how custom indicators work, read this first.
**
i push link https://fxdreema.com/documentation/gett ... indicators
and i take answer from server :
**Request-URI Too Long

The requested URL's length exceeds the capacity limit for this server.
**

What is it? pls fix it.

I found one more errors on site:
I open "User Control Panel", open "Private message", click on button "Rules, folders & settings" (link: ucp.php?i=ucp_pm&mode=options)
and have this:
[phpBB Debug] PHP Warning: in file [ROOT]/includes/ucp/ucp_pm_options.php on line 510: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/ucp/ucp_pm_options.php on line 510: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/ucp/ucp_pm_options.php on line 510: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/ucp/ucp_pm_options.php on line 510: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead
[phpBB Debug] PHP Warning: in file [ROOT]/includes/ucp/ucp_pm_options.php on line 510: preg_replace(): The /e modifier is no longer supported, use preg_replace_callback instead

[fxDreema]

Yes, I am aware that sometimes such redirection happens I fixed the link. I will take a look at the problem with PMs