In a production case, the agent died reporting the following. I've only seen this once:

2020-12-09T09:18:56.795Z agent INFO [qdrouterd-prod-default-1] addresses synchronized
events.js:174
throw er; // Unhandled 'error' event
^
Error: frame sequence error: delivery 702 not complete, got 0
at Incoming.on_transfer (/opt/app-root/src/node_modules/rhea/lib/session.js:313:23)
at Session.on_transfer (/opt/app-root/src/node_modules/rhea/lib/session.js:749:19)
at Connection.(anonymous function) [as on_transfer] (/opt/app-root/src/node_modules/rhea/lib/connection.js:783:30)
at c.dispatch (/opt/app-root/src/node_modules/rhea/lib/types.js:910:33)
at Transport.read (/opt/app-root/src/node_modules/rhea/lib/transport.js:109:36)
at SaslClient.read (/opt/app-root/src/node_modules/rhea/lib/sasl.js:328:26)
at Connection.input (/opt/app-root/src/node_modules/rhea/lib/connection.js:517:35)
at TLSSocket.emit (events.js:198:13)
at addChunk (_stream_readable.js:288:12)
at readableAddChunk (_stream_readable.js:269:11)
Emitted 'error' event at:
at Container.dispatch (/opt/app-root/src/node_modules/rhea/lib/container.js:41:33)
at Connection.dispatch (/opt/app-root/src/node_modules/rhea/lib/connection.js:244:40)
at Connection.input (/opt/app-root/src/node_modules/rhea/lib/connection.js:535:18)
at TLSSocket.emit (events.js:198:13)
at addChunk (_stream_readable.js:288:12)
at readableAddChunk (_stream_readable.js:269:11)
at TLSSocket.Readable.push (_stream_readable.js:224:10)
at TLSWrap.onStreamRead [as onread] (internal/stream_base_commons.js:94:17)