AWS - S3 - Creating a Bucket Policy - Error: Access Denied

Trying to create an Amazon Web Services - S3 bucket policy, but when running the script I get the following error. Where exactly is my access being denied? Could this issue relate to how I set up my aws configur

Traceback (most recent call last):
File "C:\Users*****\githubb\aws\s3operations.py", line 40, in <module>
print(create_bucket_policy())
File "C:\Users\Patrick\githubb\aws\s3operations.py", line 36, in create_bucket_policy
Policy=policy_string
File "C:\Users\Patrick\Python36\lib\site-packages\botocore\client.py", line 357, in _api_call
return self._make_api_call(operation_name, kwargs)
File "C:\Users\Patrick\Python36\lib\site-packages\botocore\client.py", line 661, in _make_api_call
raise error_class(parsed_response, operation_name)
botocore.exceptions.ClientError: An error occur

red (AccessDenied) when calling the PutBucketPolicy operation: Access Denied
The following is my script:

import boto3
import json

BUCKET_NAME ='patricksbucket'

def s3_client():
s3 = boto3.client('s3')
""":type : pyboto3.s3"""
return s3

def create_bucket(bucket_name):
return s3_client().create_bucket(
Bucket=bucket_name,
CreateBucketConfiguration={
'LocationConstraint': 'us-east-2'
}
)

def create_bucket_policy():
bucket_policy = {
"Vesrion": "2012-10-17",
"Statement":[
{
"Sid": "AddPerm",
"Effect": "Allow",
"Principal": "",
"Action":["s3:"],
"Resource":["arn:aws:s3:::patricksbucket/*"]
}
]
}
policy_string = json.dumps(bucket_policy)

return s3_client().put_bucket_policy(  
    Bucket=BUCKET_NAME,  
    Policy=policy_string  
)