Once qlik sense needs to be up and running ASAP I had 2 options:
Ask the Datacenter to restore de last backup of the server (once i couldnt figure out what the problem is) or do a repair on the qlik sense program.
I choose the second one first.
When the repair finished this summary popped up:
looks like there is some kind of problem with the repository.
What can I do?
In one of the log files this appears:
2 126.96.36.199 20180911T114048.587+0100 ERROR QLIK e50a870f-b53a-4944-a23b-09845e446ce2 Command=Start repository;Result=-2146893813;ResultText=Error: Key not valid for use in specified state. 0 0 0 INTERNAL System 0 Not available Repository Not available Not available Start repository -2146893813