Sybren A. Stüvel 8b322e84f8 Manager: prevent error when fetching task that was never assigned
Prevent an error when fetching a task that was never assigned to a
worker.

The error:

```
WRN error fetching task worker
    error="fetching worker : worker not found: sql: no rows in result set"
```
2025-01-09 14:45:30 +01:00
..
2024-12-01 14:49:25 +01:00
2024-08-02 11:39:59 +02:00