[Observium] poller-wrapper.py error

Hi,

just installed observium on a new host. Everything seems to be fine except that no RRD graphs are shown. I tried to run the poller-wrapper from the CLI and I get this error:

/opt/observium/poller-wrapper.py File "/opt/observium/poller-wrapper.py", line 96 with open(config_file) as f: pass ^ SyntaxError: invalid syntax

Any hints? Thanks

Chris

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