Catch errors happening when pulling envelopes
Catch errors happening when pulling envelopes

This happens usually when the receiver world disappears: there is a
little we can do about it.

adamruzicka/dynflow,Dynflow/dynflow,daviddavis/dynflow,adamruzicka/dynflow,adamruzicka/dynflow,dLobatog/dynflow,daviddavis/dynflow,Dynflow/dynflow,daviddavis/dynflow,dLobatog/dynflow,dLobatog/dynflow,Dynflow/dynflow,dLobatog/dynflow,daviddavis/dynflow,adamruzicka/dynflow,Dynflow/dynflow