Silk Test 21.0 scripts called from Silk Central


I have an issue running the Silk Test called from the Silk Central GUI.

When I run the automation scripts from the Silk Test server, the scripts works fine, but when I call the automation scripts from the SilK Central GUI , I get the below error

Playback error:

Time out expired after launching application. The requested object '//BrowserApplication[@browsertype='Firefox']' was not found within the timeout of 30 seconds.
Process name:
Working directory:
Locator: //BrowserApplication
Commandline arguments:

Timeout: 30000

Any leads would be highly appreciated

Kind Regards,