Expected behavior

When using scripts/check-gmp.gmp.py in the past it correctly reported the vulnerabilities found by a Greenbone appliance

Current behavior

After updating the greenbone appliance to 21.04.3 the script fails with "list index out of range"

Updating the gvm-tools to the current version using git pull introduced an additional bug:
get_tasks() got an unexpected keyword argument 'filter_string'

When correcting this bug by replacing filter_string with filter the original bug "list index out of range" is thrown again.

Steps to reproduce

1. Deploy check-gmp.gmp.py successfully with an older version of Greenbone OS
2. Update to 21.04.3
3. check-gmp.gmp.py will fail

GVM versions

As included in Greenbone OS 21.04.3