AWSUtility::CloudFormation::CommandRunner Logging stays empty

The problem is with CloudFormation stack. I installed the CommandRunner it works for easy commands like echo something into command-output.txt then output it in the stack. But if i try complex commands it isn't working.

The bigger problem for me is that it creates a new logstream under awsutility-cloudformation-commandrunner-logs2 Log Group in CloudWatch, but this logstream stays completely empty.

I have these actions in my policy "logs:CreateLogStream", "logs:DescribeLogGroups", "log:PutLogEvents". I installed the CommandRunner as mentioned in the readme.

This way i have no idea how to debug what is the problem with my command. Can anyone help me address this why my logging stays empty?