SQL-DATABASE ERROR

Database error in (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.4.33
Date: 21.05.2024 @ 12:01
Script: /wbb2/xy_megashoutbox.php?page_shout=chat&setting=&comment=&sid=6ab19a57c47e38e48c6706f6bf2a4040
Referer: http://friendsbistro.de/wbb2/xy_megashoutbox.php?page_shout=chat&setting=&comment=&sid=6ab19a57c47e38e48c6706f6bf2a4040