If users skip filling out the briefing or tasks, scripts\briefing.sqf will be missing code blocks that'll lead to an invalid generated code and will break the init.sqf execution process.
Solution
On the form, prevent user from proceeding to the next page or completing until they add at least one briefing and task.
Note
This is a minor issue since users should be adding a briefing and task anyways, but it would be nice quality of life for this tool to prevent users from skipping that step.