I'm sorry, I pasted the last line converted to Japanese.
I didn't know how to edit the text, so here is the English version.
Below is the text.
I was able to use it with the a20, but I couldn't use it this time.
The cause is probably that the namespace has been added to the "RequirementGroup" class, and it can no longer be referenced by the ParseRequirement function (more precisely, the GetTypeWithPrefix function) of the QuestsFromXml class.