API: node statistics endpoint causes crash
I tried to query the statistics endpoint node/<node-name>/stats and ended up in a crash of the VILLASnode. The error is terminate called after throwing an instance of 'std::out_of_range'
Specifically, I tested with the VILLASnode instance in k8s:
curl https://villas.k8s.eonerc.rwth-aachen.de/ws/api/v2/node/ws_sig/stats