Pymavlink mavlogdump.py Usage for converting bin to log

Ground Control Software Mission Planner
3

I should had find this out by myself. The ‘*’ is just logical.

But i get the next Error:

Traceback (most recent call last):
  File "C:\Users\USERNAME\AppData\Local\Programs\Python\Python310\Lib\site-packages\pymavlink\mavlogdump.py", line 237, in <module>
    match_types.append("FMT")
AttributeError: 'NoneType' object has no attribute 'append'

I watched into the Code and thought about editing it, but i dont think thats the right way… I think i installed pymavlink not the correct way or have some configuration problems.

How i installed:

pip install future
pip install lxml
pip install --upgrade pymavlink

Then i downloaded the mavlogdump.py from Github and dragged it into my pymavlink-Installation-Folder, because i wasnt able to locate it inside this folder.

For starting the script i run cmd from inside the pymavlink-Installationfolder.

Whats my fault?

Thanks fpr Help!