hi im running into this error ```httpx RemoteProtocolError l

Question

hi im running into this error ```httpx RemoteProtocolError lt ConnectionTerminated error code ErrorCodes NO ERROR last stream id 19999 additional data None gt ``` anyone who faced similar issue adding the trace stack in comments

Deepanshu Aggarwal · Answer

```Encountered exception during execution Traceback most recent call last File usr local lib python3 9 site packages h2 connection py line 224 in process input func target state = self transitions self state input KeyError lt ConnectionState CLOSED 3 gt lt ConnectionInputs SEND HEADERS 0 gt During handling of the above exception another exception occurred Traceback most recent call last File usr local lib python3 9 site packages httpcore async http2 py line 108 in handle async request await self send request headers request=request stream id=stream id File usr local lib python3 9 site packages httpcore async http2 py line 205 in send request headers self h2 state send headers stream id headers end stream=end stream File usr local lib python3 9 site packages h2 connection py line 766 in send headers self state machine process input ConnectionInputs SEND HEADERS File usr local lib python3 9 site packages h2 connection py line 228 in process input raise ProtocolError h2 exceptions ProtocolError Invalid input ConnectionInputs SEND HEADERS in state ConnectionState CLOSED During handling of the above exception another exception occurred ```

Deepanshu Aggarwal · Answer

```Traceback most recent call last File usr local lib python3 9 site packages httpx transports default py line 60 in map httpcore exceptions yield File usr local lib python3 9 site packages httpx transports default py line 353 in handle async request resp = await self pool handle async request req File usr local lib python3 9 site packages httpcore async connection pool py line 253 in handle async request raise exc File usr local lib python3 9 site packages httpcore async connection pool py line 237 in handle async request response = await connection handle async request request File usr local lib python3 9 site packages httpcore async connection py line 90 in handle async request return await self connection handle async request request File usr local lib python3 9 site packages httpcore async http2 py line 141 in handle async request raise RemoteProtocolError self connection error event httpcore RemoteProtocolError lt ConnectionTerminated error code ErrorCodes NO ERROR last stream id 19999 additional data None gt The above exception was the direct cause of the following exception Traceback most recent call last File usr local lib python3 9 site packages prefect engine py line 1334 in report task run crashes yield File usr local lib python3 9 site packages prefect engine py line 1078 in begin task run return await orchestrate task run File usr local lib python3 9 site packages prefect engine py line 1162 in orchestrate task run state = await propose state File usr local lib python3 9 site packages prefect engine py line 1496 in propose state return await propose state File usr local lib python3 9 site packages prefect engine py line 1496 in propose state return await propose state File usr local lib python3 9 site packages prefect engine py line 1496 in propose state return await propose state Previous line repeated 89 more times File usr local lib python3 9 site packages prefect engine py line 1463 in propose state response = await client set task run state File usr local lib python3 9 site packages prefect client orion py line 1678 in set task run state response = await File usr local lib python3 9 site packages httpx client py line 1842 in post return await self request File usr local lib python3 9 site packages httpx client py line 1527 in request return await self send request auth=auth follow redirects=follow redirects File usr local lib python3 9 site packages prefect client base py line 159 in send await super send args kwargs File usr local lib python3 9 site packages httpx client py line 1614 in send response = await self send handling auth File usr local lib python3 9 site packages httpx client py line 1642 in send handling auth response = await self send handling redirects File usr local lib python3 9 site packages httpx client py line 1679 in send handling redirects response = await self send single request request File usr local lib python3 9 site packages httpx client py line 1716 in send single request response = await transport handle async request request File usr local lib python3 9 site packages httpx transports default py line 353 in handle async request resp = await self pool handle async request req File usr local lib python3 9 contextlib py line 137 in exit self gen throw typ value traceback File usr local lib python3 9 site packages httpx transports default py line 77 in map httpcore exceptions raise mapped exc message from exc httpx RemoteProtocolError lt ConnectionTerminated error code ErrorCodes NO ERROR last stream id 19999 additional data None gt During handling of the above exception another exception occurred Traceback most recent call last File usr local lib python3 9 site packages h2 connection py line 224 in process input func target state = self transitions self state input KeyError lt ConnectionState CLOSED 3 gt lt ConnectionInputs SEND HEADERS 0 gt During handling of the above exception another exception occurred Traceback most recent call last File usr local lib python3 9 site packages httpcore async http2 py line 108 in handle async request await self send request headers request=request stream id=stream id File usr local lib python3 9 site packages httpcore async http2 py line 205 in send request headers self h2 state send headers stream id headers end stream=end stream File usr local lib python3 9 site packages h2 connection py line 766 in send headers self state machine process input ConnectionInputs SEND HEADERS File usr local lib python3 9 site packages h2 connection py line 228 in process input raise ProtocolError h2 exceptions ProtocolError Invalid input ConnectionInputs SEND HEADERS in state ConnectionState CLOSED During handling of the above exception another exception occurred Traceback most recent call last File usr local lib python3 9 site packages httpx transports default py line 60 in map httpcore exceptions yield File usr local lib python3 9 site packages httpx transports default py line 353 in handle async request resp = await self pool handle async request req File usr local lib python3 9 site packages httpcore async connection pool py line 253 in handle async request raise exc File usr local lib python3 9 site packages httpcore async connection pool py line 237 in handle async request response = await connection handle async request request File usr local lib python3 9 site packages httpcore async connection py line 90 in handle async request return await self connection handle async request request File usr local lib python3 9 site packages httpcore async http2 py line 141 in handle async request raise RemoteProtocolError self connection error event httpcore RemoteProtocolError lt ConnectionTerminated error code ErrorCodes NO ERROR last stream id 19999 additional data None gt The above exception was the direct cause of the following exception Traceback most recent call last File usr local lib python3 9 site packages prefect engine py line 580 in orchestrate flow run result = await run sync flow call File usr local lib python3 9 site packages prefect utilities asyncutils py line 68 in run sync in worker thread return await anyio to thread run sync call cancellable=True File usr local lib python3 9 site packages anyio to thread py line 31 in run sync return await get asynclib run sync in worker thread File usr local lib python3 9 site packages anyio backends asyncio py line 937 in run sync in worker thread return await future File usr local lib python3 9 site packages anyio backends asyncio py line 867 in run result = context run func args File flows calculate usages flows usages flow py line 47 in usages flow usages initializer scheduler output body array File usr local lib python3 9 site packages prefect flows py line 439 in call return enter flow run engine from flow call File usr local lib python3 9 site packages prefect engine py line 154 in enter flow run engine from flow call return run async from worker thread begin run File usr local lib python3 9 site packages prefect utilities asyncutils py line 148 in run async from worker thread return anyio from thread run call File usr local lib python3 9 site packages anyio from thread py line 49 in run return asynclib run async from thread func args File usr local lib python3 9 site packages anyio backends asyncio py line 970 in run async from thread return f result File usr local lib python3 9 concurrent futures base py line 446 in result return self get result File usr local lib python3 9 concurrent futures base py line 391 in get result raise self exception File usr local lib python3 9 site packages prefect client utilities py line 47 in with injected client return await fn args kwargs File usr local lib python3 9 site packages prefect engine py line 506 in create and begin subflow run return await terminal state result fetch=True File usr local lib python3 9 site packages prefect states py line 74 in get state result raise await get state exception state File usr local lib python3 9 site packages prefect task runners py line 291 in run and store result self results key = await call File usr local lib python3 9 site packages prefect engine py line 1093 in begin task run return task run state File usr local lib python3 9 contextlib py line 670 in aexit raise exc details 1 File usr local lib python3 9 contextlib py line 653 in aexit cb suppress = await cb exc details File usr local lib python3 9 contextlib py line 199 in aexit await self gen athrow typ value traceback File usr local lib python3 9 site packages prefect engine py line 1344 in report task run crashes await client set task run state File usr local lib python3 9 site packages prefect client orion py line 1678 in set task run state response = await File usr local lib python3 9 site packages httpx client py line 1842 in post return await self request File usr local lib python3 9 site packages httpx client py line 1527 in request return await self send request auth=auth follow redirects=follow redirects File usr local lib python3 9 site packages prefect client base py line 159 in send await super send args kwargs File usr local lib python3 9 site packages httpx client py line 1614 in send response = await self send handling auth File usr local lib python3 9 site packages httpx client py line 1642 in send handling auth response = await self send handling redirects File usr local lib python3 9 site packages httpx client py line 1679 in send handling redirects response = await self send single request request File usr local lib python3 9 site packages httpx client py line 1716 in send single request response = await transport handle async request request File usr local lib python3 9 site packages httpx transports default py line 353 in handle async request resp = await self pool handle async request req File usr local lib python3 9 contextlib py line 137 in exit self gen throw typ value traceback File usr local lib python3 9 site packages httpx transports default py line 77 in map httpcore exceptions raise mapped exc message from exc httpx RemoteProtocolError lt ConnectionTerminated error code ErrorCodes NO ERROR last stream id 19999 additional data None gt ```

Kalise Richmond · Answer

Hey < Deepanshu Aggarwal> are you still seeing this error

Deepanshu Aggarwal · Answer

yes im facing this error in some of the task runs

Kalise Richmond · Answer

What version of perfect are you on Are these also related to the tasks that are stuck after the flow run is completed from this <https prefect community slack com archives CL09KU1K7 p1668492725441559|thread> or is this unrelated

Deepanshu Aggarwal · Answer

yes it is related to those flows only