fix: remove error details from 500 responses in submissions API#21

Copilot wants to merge 2 commits intofeat/personal-siteString-sg/string-v2:feat/personal-sitefrom

copilot/sub-pr-13-841eb06f-feb5-476c-9483-d17aa6944b18String-sg/string-v2:copilot/sub-pr-13-841eb06f-feb5-476c-9483-d17aa6944b18Copy head branch name to clipboard