Debug Google Sheets GLMS Automation

I have built an AI-driven, fully automated GLMS that lives entirely inside Google Sheets with extensive Google Apps Script and front-end JavaScript. Everything is functional in principle, yet the launch is blocked by code-level problems.

The sticking point is code functionality:
• Data processing scripts are throwing errors and sometimes return inaccurate results.
• User-interface scripts—dialogs, sidebars, custom menus—occasionally misfire.
• AI-driven features that grade learning outcomes need a reliability and performance check.

Your task is to dive into the bound Apps Script project, track down and fix those issues, and make sure the system runs smoothly at scale.

Deliverables
– Clean, error-free data processing routines that pass my test cases.
– Stable, responsive UI scripts with every button and dialog behaving consistently.
– Optimised AI modules that stay within Apps Script quotas and return accurate scores.
– Inline comments and a brief change log so my in-house team can maintain the solution.

I’ll provide a copy of the Sheet, script access, and functional specs. If you are comfortable with Google Apps Script, JavaScript, and complex Sheet automation, I’m ready to get started right away.