3.1 Server Error 502 - Web server received an invalid response while acting as a gateway or proxy server
Problem
When trying to visit a WebTrac 3.1 page, the web browser returns this error:
Server Error
502 - Web server received an invalid response while acting as a gateway or proxy server.
There is a problem with the page you are looking for, and it cannot be displayed. When the Web server (while acting as a gateway or proxy) contacted the upstream content server, it received an invalid response from the content server.
We are able to view a static image that resides on the WebTrac server, but can't seem to bring up the splash page or any search page for WebTrac.
Solution
This error commonly means that either
a) The DB Utilities program has not been run on the RecTrac server to properly configure WebTrac with the correct Base Href,
b) The WebTrac Interface Parameters record in RecTrac has an incorrect path, or
c) The \VSI3\RecTrac\Programs\config.ini file is missing or has incorrect information.
In this case, DB Utilities was run with the wrong Base Href for WebTrac, which caused the config.ini file to be incorrect as well. After re-running DB Utilities and updating the Interface Parameters with the correct Base Href, WebTrac pages began to display.