scrapy + TypeError: listToString() takes 1 positional argument but 2 were given code example

Example 1: takes 1 positional argument but 2 were given python

This error is often caused by the fact that the self is omitted as a parameter in the method of the class.

https://careerkarma.com/blog/python-takes-one-positional-argument-but-two-were-given/#:~:text=Conclusion,the%20methods%20in%20a%20class.
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Example 2: 2 positional arguments but 3 were given

#Positional arguments are the amount of arguments passed through a function
#For example

def function(value1, value2):
	print(value1)
	print(value2)

function("value1","value2","value3")