Hi Rajesh Kumar,
I went through your attached OML & there are a couple of things that need to be corrected.
- Target Directory should be :
firebase.com.fintellabs.covex

- Extract your google-services.zip & it is not structured as per guidelines. There's an extra folder within.

I had corrected the OMl & attached the fixed version. Refer the same & let me know.
regards,
Assif