I can no longer access scriptcase (9.1 on windows 2012 R2 64) - Internal server error

Hallo,
today the system no longer allows me to access my local installation. I have the Scriptcase apache as a service (on windows 2012 R2 64) and it started good (i have restarted a lot of times and also reboot the server).
When i try the url http://127.0.0.1:8090/scriptcase/devel/iface/login.php

i receive this error page : [h=1]Internal Server Error[/h]
The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at xxxxxx@gmail.com 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.

The error.log has these two lines:
[Thu Jul 19 17:15:47.699675 2018] [fcgid:warn] [pid 1336:tid 884] (OS 109)Pipe terminata. : [client 127.0.0.1:51192] mod_fcgid: get overlap result error
[Thu Jul 19 17:15:47.699675 2018] [core:error] [pid 1336:tid 884] [client 127.0.0.1:51192] End of script output before headers: login.php

what happened, how do I solve the problem ?
Gianpaolo