PROP_PRESET_UNKNOWN
What happened
The prop attribute names a rule preset that is not in this version of Forge. When a preset with a close name exists, the message suggests it.
What to do
Correct the name, or remove prop and set the rules yourself.
Example
text
strategy.py, line 7: my_firm_100k is not a rule preset Forge has. [PROP_PRESET_UNKNOWN]The wording of the message depends on your file, and the code does not. An error stops the file from loading.