Adding an existing user to a group does not show an error

[SanjaySiddarth]

Describe the bug
When adding a user that is already in a group, there is no error/message shown

To Reproduce

1. Create a group.
2. Add a user to the group.
3. Attempt to add the same user to the same group again.

Logs:

prisma:error

Invalid `prisma.groupUser.createMany()` invocation:

Unique constraint failed on the fields: (`groupId`,`userId`)

Expected behavior

Perhaps the UI should show a message that the user already exists in the group, and the error should be handled gracefully.

Screenshots

N/A

App version

v.2.1.5

Desktop (please complete the following information):

• OS: Ubuntu Server
• Browser: N/A
• Version: N/A

Smartphone (please complete the following information):

N/A

Additional context