To duplicate this issue you please follow some steps as below:
1. Navigate to "Service" menu > Service > Queues.
2. Select a "Activity" queue item and click on "Route" button on the ribbon bar.
3. Select "User/Team" option for "Route to" field.
4. - Select Yes at "Also remove the item(s) from the Queue" field
- Click on the search icon to search and select the required user.
- Click on the Route button.
Result: Show "Bad Request - Error in query syntax. "
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