In MAC, the below command failed with ;. Hence raised this issue.

Need to add : instead of; for custom directory output in robot framework command .

https://github.com/allure-framework/allure-python/blob/master//allure-robotframework/README.rst

In the below command, need to add : instead of ;.

$ robot --listener allure_robotframework;/set/your/path/here

Same command is also present in pypi url.

https://pypi.org/project/allure-robotframework/