[FMS/TB] Testing and stabilizing everything when working together

[Jonas-Petersen]

User story

1. As a SD
2. I want / need to fix errors occuring when all components work together
3. So that we have a running and stable system

Acceptance criteria

• Everything is tested
• Errors are fixed
• Stable running system with all components

Definition of done (DoD)

• Linter & Checker were performed and passed
• Code Review has been completed
• Code was merged in sprint release candidate
• Updates are written in issue comments
• Feature builds and tests successfully
• Acceptance by product owner
• User Story & Acceptance Criteria fulfilled

DoD general criteria

• Feature has been fully implemented
• Feature has been merged into the mainline
• All acceptance criteria were met
• Product owner approved features
• All tests are passing
• Developers agreed to release