Mazi wrote:
1.
Which Limesurvey version are we talking about?
I am using limesurvey version 1.90
2. Could you run the install script correctly?
don't understand on this.
Mazi is trying to narrow down when and where the error appears. So he wants to know if you were able to run the installation script of limesurvey without problems, or if the installation was not sucessful / with error message.
3. When does the error show up (URL?)?
Proxy Error
The proxy server received an invalid response from an upstream server.
The proxy server could not handle the request GET /limesurvey/test.php.
Reason: Error reading from remote server
Apache/2.2.3 (Red Hat) Server at xxx.xxx.xx.xx Port 80
This is the error message, but does not explain WHEN the error message appears. It would be good to know what leads to that error message. Please describe as detailed as possible. Otherwise it is almost impossible to help you, because it would always be only guesswork.
4. Which URL do you use to log in at the admin backend and what did you set as $rooturl in config.php?
"http://{$_SERVER}/limesurvey";