submission controller accepts empty form deatils..no mandatory fields set, may be github link can be set compulsory and the rest can be null

この issue には説明がありません。

Start by locating the submission controller and the form validation entry point. Reproduce a submission with empty details and verify which fields are currently accepted, then check that a GitHub link is required while the other fields may remain null. Done means invalid empty submissions are rejected consistently.

索引モデルが issue の本文から書いたものです。