Multiple and unsure errors by dialog boxes

**Describe the bug**
There are multiple and unclarified issues shown upon clicking on dialog boxes. Validator issues hide due to snack bar issues being shown and proper issues aren't shown properly.

**To Reproduce**
Steps to reproduce the behavior:

1. Go to 'Home Screen'
2. Click on 'Create Hike or Join Hike'
3. Click Create or Validate button
4. See error

**Expected behavior**
Errors and validators should work differently and show the particular error they represent. Multiple issues musn't arise.

**Demonstration**

https://user-images.githubusercontent.com/69353350/150590321-8889e6ed-29a6-4083-8fa0-5ef53fd94931.mov

https://user-images.githubusercontent.com/69353350/150590345-0b2a62ad-d406-4ace-b6b6-b5cb82891c99.mov

**Environment**
- Device/emulator being used: Pixel 4XL
- OS (iOS/ Android); If Android then android version:
- Flutter version: 2.8.1

**Are you working on this issue? (Yes/No)**
Yes, I am working on solving this issue!