When you try to collect your emails for the Helpdesk, they do not come. And in your production.log (or redmine_helpdesk.log) file, you find the following error message:
Dispatch error: Couldn't find Issue without an ID
This error appears because you have defined a custom field and made it to be required. That's why the Helpdesk is breaking and the tickets do not come.
So, to fix this problem, you could pick some of the below 3 solutions:
- remove the custom field
- disable the "required" option of it
- if you decide to keep the "required" option enabled, then please set some default value