Can't convert issue to discussion: ConvertToDiscussionDialogQuery returns a server error

[aidenlx]

🏷️ Discussion Type

Bug

💬 Feature/Topic Area

Issues

Body

Converting an issue to a discussion fails with a generic server-side error.

The failure happens on the ConvertToDiscussionDialogQuery GraphQL request — i.e. when the "Convert to discussion" dialog loads, before a target category can even be selected. The conversion never gets far enough to be attempted, and the error carries no actionable detail.

• Request ID: A5A0:1BB6D7:CD6413:104D717:6A64E92F
• Timestamp: 2026-07-25T16:49:56Z
• Affected issue: [FR] Support multi-source citation insertion aidenlx/zotlit#496
• Repository: aidenlx/zotlit (public)

Ruled out on my side: Discussions is enabled on the repo with categories configured, and I own the repo, so permissions and feature setup shouldn't be factors.

Happy to reproduce and collect additional request IDs if that would help narrow it down.

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