Queues internal error

We are receiving Queue send failed: Internal Server Error many times a day.
If we can’t rely on queues to work reliably what’s the point?
In the past 3 days we’ve had 63 of these errors.
Unfortunately we don’t know which queue it is right now but we’ve pushed a change to find out the queue name.
We rely heavily on queues to offload part of the work and it’s unacceptable that we are losing users data because of queue internal error.