NoMongo: Setup Script Creates the Wrong API URL

[palisadoes]

Describe the bug

We are migrating to the new develop-postgres branch. There are bugs in the initial login screen being addressed here:
- #3477

However there is another issue preventing others from accessing the portal correctly

1. The setup script creates .env files with the REACT_APP_TALAWA_URL parameter having a trailing /. It must be removed for the latest API1. Instead of this

REACT_APP_TALAWA_URL=http://localhost:4000/graphql/

1. It should create this

REACT_APP_TALAWA_URL=http://localhost:4000/graphql

1. In stead of a 404 message, there should be an invalid data message

To Reproduce
Steps to reproduce the behavior:

1. Use the setup script
2. Start Talawa-admin
3. Access the Talawa-Admin URL
4. The wrong error is shown

Expected behavior
A clear and concise description of what you expected to happen.

Actual behavior
A clear and concise description of how the code performed w.r.t expectations.

Screenshots

1. When configured correctly, when using Talawa-Admin by accessing this URL

http://localhost:4321

1. The initial error message must be
   
2. Not this
   

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

• Student Internship Programs talawa#359

[JaiPannu-IITI]

@palisadoes Can i work on this?

[LakshayPuhal]

@palisadoes i would like to contribute here.

[vivekbisen04]

@palisadoesI would like to work on this issue. Please assign it to me.

[rishyym0927]

@palisadoes I’d love to take up the issue regarding the REACT_APP_TALAWA_URL parameter in the setup script while migrating to the develop-postgres branch. Specifically, I'll:

✅ Update the setup script to remove the trailing / in REACT_APP_TALAWA_URL
✅ Ensure the correct error message is displayed instead of a 404
✅ Verify that Talawa-Admin behaves as expected after the fix

Can this issue be assigned to me? Looking forward to contributing! 😊

[JaiPannu-IITI]

Thank you for assigning this to me. I am starting work on it now.

[JaiPannu-IITI]

@palisadoes This issue required modifying a sensitive file. Could you please review the changes and add the ignore-sensitive-file label to this PR? Thanks!