Bug Report: Add new member mutation is not working

[kanhaiya04]

Describe the bug
In the people screen the ADD MEMBER option is not working. Both the ways are not working Existing User and New User.

To Reproduce
Steps to reproduce the behavior:

1. Open the people screen of any org
2. Try to add a new member
3. You will both options are not working as expected.

Expected behavior
A new member should be added from the existing user or by creating a new one depending upon the option selected.

Actual behavior
The new member is not added because of some error in the mutation.

Screenshots
If applicable, add screenshots to help explain your problem.

Additional details
Add any other context or screenshots about the feature request here.

Potential internship candidates
Please read this if you are planning to apply for a Palisadoes Foundation internship PalisadoesFoundation/talawa#359

[kanhaiya04]

I would like to work on this.

[palisadoes]

Should this be closed and reopened in the API?

[kanhaiya04]

No, I got the reason behind this issue which is mainly due to the incorrect implementation of the mutation in the admin.
So just need to change few mutation in the admin and I will create the PR.