Cannot call template solely relying on default settings

[JanStreffing]

When calling a template it is not possible to rely solely on default settings. Calling in a workflow:

ice_integrals_combined_nocomparison:
        figsize: [14, 8]

works fine. But calling:

ice_integrals_combined_nocomparison:

results in:

Traceback (most recent call last):
  File "/p/project/chhb19/jstreffi/software/miniconda3/envs/pyfesom2/bin/fdiag", line 33, in <module>
    sys.exit(load_entry_point('fdiag', 'console_scripts', 'fdiag')())
  File "/p/project/chhb19/jstreffi/software/fdiag/fdiag/fdiag.py", line 234, in fdiag
    webpage = analyses[analysis](settings, analysis)
  File "/p/project/chhb19/jstreffi/software/fdiag/fdiag/drivers.py", line 183, in drive_ice_integrals_combined_nocomparison
    driver_settings = settings[analysis_name].copy()
AttributeError: 'NoneType' object has no attribute 'copy'