Boto3 Dynamodb list_append Invalid type for parameter ExpressionAttributeNames type: <class 'set'>, valid types: <class 'dict'>
Boto3 Dynamodb list_append Invalid type for parameter ExpressionAttributeNames type: <class 'set'>, valid types: <class 'dict'> Question: Error message is throwing me. I have update_item updating an existing list. When I put everything in the UpdateExpression, it works fine. When I use the equivalent with ExpressionAttributeNames, I get the error in the title. They look equivalent …