Internal Error after changing file path in the plugin

Hi there,

I have a problem with the plugin qtranslate. I installed the plugin on wordpress and changed the ending of my file path from http://localhost:8080/wordpress to http://localhost:8080/wordpress/en in the plugin dashbord.

Then wordpress shut down and always give me the follow internal error code.

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at postmaster@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.

Additionally, a 500 Internal Server Error error was encountered while trying to use an ErrorDocument to handle the request.

Apache/2.4.17 (Win32) OpenSSL/1.0.2d PHP/5.6.23 Server at localhost Port 8080

I looked in my error log and there is the message:

[Thu Sep 01 16:49:24.357864 2016] [core:error] [pid 3308:tid 1628] [client ::1:57506] AH00124: Request exceeded the limit of 10 internal redirects due to probable configuration error. Use ‘LimitInternalRecursion’ to increase the limit if necessary. Use ‘LogLevel debug’ to get a backtrace.

Could you help me out to fix this problem or could you give me access with instructions to fix the problem by myself?

Thank you in advance!