we been round the block a million times with IBM on this issue with no luck. we are running CA 11.1.7 FP2 in a mixed environment (windows and linux). When we run a report from edit mode, we get a 504 Bad Gateway error. report runs fine if run normally, just getting the error when running from edit mode. we've tried from the loadbalanced URL, directly from the GW URI's and directly from the dispatcher URI's with no luck. we've run and pulled .har and logs from chrome that gave nothing and the Cognos logs are relatively unhelpful.
the only lines that i can pull from session logs that show any issue are below (IP addresses removed):
2021-08-03T13:54:09.279-0400 WARN Trace.dispatcher [Default Executor-thread-83922] 4jlGd8hM2qjC2C8GM888Glywqq4y2ChvlvG9vsdl jCCMlvGy8wjqq8ysyGhyGhGMCM288l8l82lCjyw4 vGs99s4w2syqMqGGvqw88C4vl8M42lMGMqhsMyC2 670859c7-8988-4888-b78c-166ec09d34f2 ###.###.###.### 54856 AggAAADjvBJhAAAAAAoAAAB/r/KJ2ggj1oXlFAAAAIAh5i/E0SM0gaDIMQLwA0XdRGg8BwAAAFNIQS0yNTYgAAAAZb9fM6E5Dz0U4WzHvAvEIk5Xo7x4WNHSunS2vQfvRLA= IBM Cognos 4312 ###.###.###:9301 4312 2021-08-03 13:54:09.279 -4 0B473C4656131EAED3892AA66DF2A4FF6F418FC72B66DAA54D6F0AB3F4BB1ECC_{_670859c7-8988-4888-b78c-166ec09d34f2_}_ q4vM49shCwqld4Gdhj2dj29dy8dwCwlwqsjGhCsG 1 Default Executor-thread-83922 DISP 7 3 Trace.dispatcher [test_do_html_errors] com.cognos.pogo.handlers.fault.TestDoHTMLErrorPage TRACE
2021-08-03T13:54:09.279-0400 DEBUG com.cognos.pogo.pdk.BasicHandler [Default Executor-thread-83922] 4jlGd8hM2qjC2C8GM888Glywqq4y2ChvlvG9vsdl jCCMlvGy8wjqq8ysyGhyGhGMCM288l8l82lCjyw4 vGs99s4w2syqMqGGvqw88C4vl8M42lMGMqhsMyC2 670859c7-8988-4888-b78c-166ec09d34f2 ###.###.###.### 54856 AggAAADjvBJhAAAAAAoAAAB/r/KJ2ggj1oXlFAAAAIAh5i/E0SM0gaDIMQLwA0XdRGg8BwAAAFNIQS0yNTYgAAAAZb9fM6E5Dz0U4WzHvAvEIk5Xo7x4WNHSunS2vQfvRLA= IBM Cognos 4312 invoking [test_do_html_errors] com.cognos.pogo.handlers.fault.TestDoHTMLErrorPage
2021-08-03T13:54:09.279-0400 DEBUG com.cognos.pogo.handlers.fault.TestDoHTMLErrorPage [Default Executor-thread-83922] 4jlGd8hM2qjC2C8GM888Glywqq4y2ChvlvG9vsdl jCCMlvGy8wjqq8ysyGhyGhGMCM288l8l82lCjyw4 vGs99s4w2syqMqGGvqw88C4vl8M42lMGMqhsMyC2 670859c7-8988-4888-b78c-166ec09d34f2 ###.###.###.### 54856 AggAAADjvBJhAAAAAAoAAAB/r/KJ2ggj1oXlFAAAAIAh5i/E0SM0gaDIMQLwA0XdRGg8BwAAAFNIQS0yNTYgAAAAZb9fM6E5Dz0U4WzHvAvEIk5Xo7x4WNHSunS2vQfvRLA= IBM Cognos 4312 do HTML error page? - false
environment build:
Loadbalanced external URL round robin'ing to Cognos GWs.
Linux Cognos GW's, using httpd.
Linux Dispatchers
Windows CMs.