Getting error while executing Parallel execution

Hi team,

I am trying to execute Parallel execution through Parallel script object. I can execute my scripts parallelly in different devices. But the issue is I'm getting one error message in the TestComplete console - "The object "Parallel" does not exist." I have executed in TestComplete and Test Execute, in both I am facing this issue. Trying to understand the error. Please advise. Please check the below code and attached screenshot.

Parallel.RunWebTests(tests, browsers, url, server);