504 Gateway Time-out Error

Hi,

We have an error on the Web DV, no one can connect, when logging in it remains processing and in User Session it does not assign PID COK fro E1 to the new user session.

seems cannot log in to Web DV, but according this log, could this error come from AIS DV?

Web Log;

04 Nov 2026 10:12:34,106[SEVERE][RUNTIME]AIS Proxy Caller - AIS Login Failure - Json Processing Error com.fasterxml.jackson.core.JsonParseException: Unexpected character ('<' (code 60)): expected a valid value (JSON String, Number, Array, Object or token 'null', 'true' or 'false')
at [Source: (String)"<html><head><title>504 Gateway Time-out</title></head><body><center><h1>504 Gateway Time-out</h1></center><hr><center></center></body></html><!-- a padding to disable MSIE and Chrome friendly error page --><!-- a padding to disable MSIE and Chrome friendly error page --><!-- a padding to disable MSIE and Chrome friendly error page --><!-- a padding to disable MSIE and Chrome friendly error page --><!-- a padding to disable MSIE and Chrome friendly error page --><!-- a padding to disable MSIE and"[truncated 31 chars]; line: 1, column: 2]