502 Proxy Error

502 Proxy Error
8/3/16 11:07 PM

Currrently we have problems with the webpage  << >>. Please help us about that; the error messages are:    

Proxy ErrorThe proxy server received an invalid response from an upstream server.The proxy server could not handle the request GET /klaros-web/pages/subviews/define/project/projects.seam.Reason: Error reading from remote serverApache/2.4.7 (Ubuntu) Server at Port 443*********************************************************************************************************************

Thanks in advance

Alexis Chicaiza
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RE: 502 Proxy Error
8/4/16 4:14 PM as a reply to Alexis Chicaiza.
Hello Alexis,

this error message indicates that your Apache web server is not able to reach your Klaros installation, which may be down or otherwise unable to respond.

For further investigation, you need to consult your Apache and Klaros log files for more details.



P.S.: Please always state the version number and edition (Community / Enterprise / Mobile) of your Klaros-Testmanagement installation when asking questions here. Thank you in advance!
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RE: 502 Proxy Error
8/13/19 1:32 PM as a reply to Alexis Chicaiza.
The 502 Proxy Error  usually happens when there are some network errors between computer and internet severs . This means that a server (not necessarily a web server) acting as a gateway or proxy and received an invalid response from an upstream (or origin) server. In most cases the problem is not with you computer or your internet connection , it's far more likely that it's the website's server instead. Fortunately, there are some common and effective solutions for analyzing and fixing most of the causes of 502 Bad Gateway Errors.

  • Perform a hard-refresh in your browser. On Macs, this is done by pressing Cmd + Shift + R.
  • This problem is due to poor IP communication between back-end computers, possibly including the Web server at the site you are trying to visit. Before analysing this problem, you should clear your browser cache completely.
  • If you get this problem for only some of the Web sites you try to visit then it is likely to be a problem at those sites i.e. one of their pieces of equipment is failing/overloaded. Contact the people at those sites.
  • If you are surfing the Web and see this problem for all Web sites you try to visit, then either 1) your ISP has a major equipment failure/overload or 2) there is something wrong with your internal Internet connection e.g. your firewall is not functioning correctly. In the first case, only your ISP can help you. In the second case, you need to fix whatever it is that is preventing you reaching the Internet.
  • In some cases, this error caused by low computer hard disk space, you can go check the free space of your computer hard disk. If there is really not enough free space left, clean your computer hard disk well.
  • Start your browser in Safe Mode. Running a browser in Safe Mode means to run it with default settings and without add-ons or extensions, including toolbars.
  • If your web application is configured to listen on a socket, ensure that the socket exists in the correct location and that it has the proper permissions
  • Finally, restart your computer/networking equipment. Some temporary issues with your computer and how it's connecting to your network could be causing 502 errors, especially if you're seeing the error on more than one website. In these cases, a restart would help.
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