Log errors in the layer _runMirrorLoop where there is an exception and no waiters for it SYN-3313 (#2580)
Log errors in the layer _runMirrorLoop where there is an exception and no waiters for it SYN-3313 (#2580)

* Log errors in the layer _runMirrorLoop where there is an exception and no waiters for it.
vertexproject/synapse,vertexproject/synapse,vertexproject/synapse