My crawler fails to retrieve any schema, and it fails with Access Denied error:
ERROR : Error Access Denied (Service: Amazon S3; Status Code: 403; Error Code: AccessDenied; Request ID: xxxx; S3 Extended Request ID: xxxxxxxxxxx) retrieving file at s3://openaq-fetches/realtime/2018-10-09/1539043480.ndjson. Tables created did not infer schemas from this file.
Haven’t watched this video, but an HTTP 403 is a forbidden error (https://en.wikipedia.org/wiki/HTTP_403). Make sure you have set up your credentials and are using them and that those credentials have access to the s3 file you are trying to get.