When trying to test sample data against the AWS.ALB schema in the Panther Console, I see a "log not CSV" error.
Make sure that your file is in the format the Panther Console expects for this schema (see example ALB log format here). Panther's backend parses ALB logs similar to a CSV file. The only difference is that ALB files are delimited by spaces. If you think you have the correct log format and are still getting errors, please reach out to Panther Support.
This error can happen if your sample log data is not in the correct format.