Gateway time-out Error code 504

[pashaali]

i was read that this post and try to do this maybe fix the problem

here is link

504 Gateway error timeout

hello, guys i am using an application call vtiger, however time to time it become very slow when loading and then “The gateway did not receive a timely response from the upstream server or application.” i read i have to change max time outs. where is that on UI? cant find it. thanks (once again new to hestia)