Building error Unknown error, contact support for more details


I cant build my app (id: 217590). The building processe always finish like this:

Status: error
Message: Unknown error, contact support for more details.

I also dont receive any log or other information on my e-mail to help me debuging the error.

Can some one help me with this? How can i get access to the building log?

Same here for IOS…

Same here for web - this has been going on for days - the build service has been intermittent at best.

Same for Android…What´s going on?

Same here for android.
I have a simple app with a webviewer only. Maybe is webviewer which gives the error ?