What is the port number to be given in internal & external port in Jibri.conf?

Hi Since we are new to jibri installation we set our internal & external port number as follows

internal-api-port = 2222
external-api-port = 3333

But upon finishing the setup we received some error related to port numbers & recording failed to start.

Can you paste the error message?

Is there any application using these ports?

This error resolved now thanks anyway for replying