What causes "Unexpected error while canceling all except current: {e}" in invoke-ai/InvokeAI?

Check detail string for the underlying exception

invoke-ai/InvokeAI · error · HTTPException

Unexpected error while canceling all except current: {e}

Error message

Unexpected error while canceling all except current: {e}

What it means

Thrown by cancel_all_except_current: any exception from SessionQueue.cancel_all_except_current(queue_id, user_id) becomes a 500 with the exception message in the detail. Non-admin users are scoped to their own items via user_id; failures here are unclassified and reported as generic server errors.

Source

Thrown at invokeai/app/api/routers/session_queue.py:311

@session_queue_router.put(
    "/{queue_id}/cancel_all_except_current",
    operation_id="cancel_all_except_current",
    responses={200: {"model": CancelAllExceptCurrentResult}},
)
def cancel_all_except_current(
    current_user: CurrentUserOrDefault,
    queue_id: str = Path(description="The queue id to perform this operation on"),
) -> CancelAllExceptCurrentResult:
    """Immediately cancels all queue items except in-processing items. Non-admin users can only cancel their own items."""
    try:
        # Admin users can cancel all items, non-admin users can only cancel their own
        user_id = None if current_user.is_admin else current_user.user_id
        return ApiDependencies.invoker.services.session_queue.cancel_all_except_current(
            queue_id=queue_id, user_id=user_id
        )
    except Exception as e:
        raise HTTPException(status_code=500, detail=f"Unexpected error while canceling all except current: {e}")


@session_queue_router.put(
    "/{queue_id}/delete_all_except_current",
    operation_id="delete_all_except_current",
    responses={200: {"model": DeleteAllExceptCurrentResult}},
)
def delete_all_except_current(
    current_user: CurrentUserOrDefault,
    queue_id: str = Path(description="The queue id to perform this operation on"),
) -> DeleteAllExceptCurrentResult:
    """Immediately deletes all queue items except in-processing items. Non-admin users can only delete their own items."""
    try:
        # Admin users can delete all items, non-admin users can only delete their own
        user_id = None if current_user.is_admin else current_user.user_id
        return ApiDependencies.invoker.services.session_queue.delete_all_except_current(
            queue_id=queue_id, user_id=user_id
        )

View on GitHub (pinned to 0b6a024f2f)

Solutions

Check detail string for the underlying exception
Verify queue_id is valid on the current instance
Retry during lower load if SQLite locking is implicated
If persistent, check server logs and DB integrity (integrity_check on invokeai.db)

Defensive patterns

Strategy: try-catch

Validate before calling

const q = await fetch(`/api/v1/queue/${queueId}`);
if (!q.ok) throw new Error(`Queue ${queueId} not found`);

Type guard

function isCancelResult(v) { return v !== null && typeof v === 'object' && 'canceled' in v; }

Try / catch

try {
  const res = await fetch(`/api/v1/queue/${queueId}/cancel_all_except_current`, {method:'PUT'});
  if (res.status === 500) throw new Error((await res.json()).detail);
  return await res.json();
} catch (e) { console.error('bulk cancel failed:', e.message); }

Prevention

Validate queue_id before bulk operations
Avoid bulk cancel during heavy queue writes; pause first if needed
Read the detail string - the underlying exception is embedded
Run DB integrity checks if cancel failures recur

When it happens

Trigger: PUT /{queue_id}/cancel_all_except_current with an invalid queue_id, DB write failure during bulk cancel, or an internal service error while computing cancellable items.

Common situations: Bulk-cancel while the queue is under heavy write load (SQLite lock contention); stale queue_id after switching instances; admin flag not set so scoping logic operates on unexpected user data.

Related errors

AI-assisted analysis of invoke-ai/InvokeAI@0b6a024f2f (2026-08-29). Data as JSON: /api/errors/38f85f6123988534. Report an issue: GitHub.