The operation was OK in POSTMAN, but an error occurs in python-amazon-sp-api.

[ShakMitz]

Dear.

Regarding various parameters, the operation was OK in POSTMAN, but an error occurs in python-amazon-sp-api.

I thought there was something wrong with the pip conflict, so I reinstalled Python and deleted all the pips, but the symptom did not change.

Even in this case
・ IAM USER
・ IAM ROLE
Is there something wrong with how to create?

Best regards.

[ShakMitz]

I was able to solve it myself!
Thank you.