Possible bug in relative_permeability_metrics.ipynb?

[QRW-bot]

hello，dear development team. Thanks to this open source project, it is convenient for me to learn pore network simulation.
While running the relative penetration simulation case (relative_permeability_metrics.ipynb) provided by the website, An error is reported, that is "'NoneType' object has no attribute 'keys'".

This line of code seems to get a collection of 'flow_inlets', but it doesn't seem to have typed 'flow_inlets'. How to solve this error please

[QRW-bot]

After my testing, I found that this problem can be solved by the following method in setup of RelativePermeability.py: change if (invasion_sequence == 'invasion_sequence'): to if (invasion_sequence != 'invasion_sequence'):