grpc-dart
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20 hours ago •
grpc
grpc
Null check operator used on a null value
Using package:grpc version 3.0.2, stack trace from pub.dev which uses package:grpc through package:appengine.
Error:
gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error making call: Null check operator used on a null value, details: null, rawResponse: null, trailers: {})
Stack:
dart:async/stream_controller.dart 561:44 _StreamController.addError
package:grpc/src/client/call.dart 213:18 ClientCall._terminateWithError
package:grpc/src/client/call.dart 269:7 ClientCall._sendRequest
package:grpc/src/client/call.dart 249:24 ClientCall.onConnectionReady.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
There is two issues here:
- [ ] Null check operator used on a null value -- probably somewhere in
package:grpc. - [ ] An error reporting a null check operator is caught and wrapped as a grpc error code 14.
This isn't something that happens frequently:
Full stack-trace
api_builder: Unhandled error in API handler (incidentId: 297a9bf5-c9f8-4a43-9885-5d610b1a2adb)
Error:
gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error making call: Null check operator used on a null value, details: null, rawResponse: null, trailers: {})
Stack:
dart:async/stream_controller.dart 561:44 _StreamController.addError
package:grpc/src/client/call.dart 213:18 ClientCall._terminateWithError
package:grpc/src/client/call.dart 269:7 ClientCall._sendRequest
package:grpc/src/client/call.dart 249:24 ClientCall.onConnectionReady.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async/future_impl.dart 348:23 Future.then
package:grpc/src/client/call.dart 249:12 ClientCall.onConnectionReady
package:grpc/src/client/http2_connection.dart 183:10 Http2ClientConnection._startCall
package:grpc/src/client/http2_connection.dart 142:9 Http2ClientConnection.dispatchCall
package:grpc/src/client/channel.dart 96:18 ClientChannelBase.createCall.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async/future_impl.dart 348:23 Future.then
package:grpc/src/client/channel.dart 94:21 ClientChannelBase.createCall
package:appengine/src/appengine_internal.dart 302:22 _ClientChannelWithClientId.createCall
package:grpc/src/client/client.dart 49:18 Client.$createUnaryCall.<fn>
package:grpc/src/client/client.dart 57:19 Client.$createUnaryCall
package:appengine/src/grpc_api/dart/google/datastore/v1/datastore.pbgrpc.dart 70:12 DatastoreClient.runQuery
package:appengine/src/grpc_api_impl/datastore_impl.dart 254:62 GrpcDatastoreImpl.query
package:gcloud/src/db/db.dart 267:30 Query.run.<fn>
dart:async/stream_controller.dart 773:24 _runGuarded
dart:async/stream_controller.dart 651:7 _StreamController._subscribe.<fn>
dart:async/stream_impl.dart 417:13 _BufferingStreamSubscription._guardCallback
dart:async/stream_controller.dart 650:18 _StreamController._subscribe
dart:async/stream_controller.dart 786:19 _ControllerStream._createSubscription
dart:async/stream_impl.dart 473:9 _StreamImpl.listen
dart:async/stream_pipe.dart 114:10 new _ForwardingStreamSubscription
dart:async/stream_pipe.dart 86:16 _ForwardingStream._createSubscription
dart:async/stream_pipe.dart 81:12 _ForwardingStream.listen
dart:async/stream.dart 1035:10 Stream.toList
package:pub_dev/package/backend.dart 242:30 PackageBackend.versionsOfPackage
package:pub_dev/package/backend.dart 547:50 PackageBackend.listVersions
===== asynchronous gap ===========================
package:pub_dev/frontend/handlers/package.dart 379:39 listVersionsHandler.<fn>
package:pub_dev/frontend/handlers/package.dart 378:53 listVersionsHandler.<fn>
package:neat_cache/neat_cache.dart 175:35 _Entry.get
===== asynchronous gap ===========================
package:pub_dev/frontend/handlers/package.dart 378:49 listVersionsHandler
package:pub_dev/frontend/handlers/pubapi.dart 39:18 PubApi.listVersions
package:pub_dev/frontend/handlers/pubapi.g.dart 14:38 _$PubApiRouter.<fn>
package:pub_dev/frontend/handlers/pubapi.g.dart 12:7 _$PubApiRouter.<fn>
dart:core-patch/function_patch.dart 11:30 Function._apply
dart:core-patch/function_patch.dart 34:12 Function.apply
package:shelf_router/src/router_entry.dart 107:29 RouterEntry.invoke.<fn>
package:shelf_router/src/router_entry.dart 103:30 RouterEntry.invoke.<fn>
package:shelf_router/src/router_entry.dart 111:7 RouterEntry.invoke
package:shelf_router/src/router.dart 175:38 Router.call
package:pub_dev/frontend/handlers.dart 69:35 createAppHandler.<fn>
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async-patch/async_patch.dart 45:22 _asyncThenWrapperHelper
package:pub_dev/frontend/handlers.dart createAppHandler.<fn>
package:pub_dev/shared/handler_helpers.dart 82:29 _redirectLoopDetectorWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 81:10 _redirectLoopDetectorWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 154:29 _cspHeaderWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 153:10 _cspHeaderWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 255:27 _userAuthWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 244:10 _userAuthWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 146:25 _requestContextWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 121:10 _requestContextWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 281:38 _userSessionWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 263:10 _userSessionWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 303:38 _httpsWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 295:10 _httpsWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 237:25 _sanitizeRequestWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 230:10 _sanitizeRequestWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 178:27 _logRequestWrapper.<fn>
package:pub_dev/shared/handler_helpers.dart 170:10 _logRequestWrapper.<fn>
package:shelf/shelf_io.dart 114:29 handleRequest
package:pub_dev/shared/handler_helpers.dart 51:5 runHandler.<fn>
package:appengine/appengine.dart 80:12 runAppEngine.<fn>
package:appengine/src/appengine_internal.dart 57:18 runAppEngine.<fn>.<fn>.<fn>
package:gcloud/service_scope.dart 205:19 _ServiceScope._fork.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
dart:async/zone.dart 1863:10 _runZoned
dart:async/zone.dart 1851:12 runZonedGuarded
dart:async/zone.dart 1782:12 runZoned
package:gcloud/service_scope.dart 204:12 _ServiceScope._fork
package:gcloud/service_scope.dart 102:30 fork
package:appengine/src/appengine_internal.dart 55:9 runAppEngine.<fn>.<fn>
package:appengine/src/server/server.dart 83:17 AppEngineHttpServer.run.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
dart:async/zone.dart 1335:19 _CustomZone.runUnary
dart:async/zone.dart 1244:7 _CustomZone.runUnaryGuarded
dart:async/stream_impl.dart 341:11 _BufferingStreamSubscription._sendData
dart:async/stream_impl.dart 271:7 _BufferingStreamSubscription._add
dart:async/stream_controller.dart 733:19 _SyncStreamControllerDispatch._sendData
dart:async/stream_controller.dart 607:7 _StreamController._add
dart:async/stream_controller.dart 554:5 _StreamController.add
dart:_http/http_impl.dart 3237:19 _HttpServer._handleRequest
dart:_http/http_impl.dart 2990:19 new _HttpConnection.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
dart:async/zone.dart 1335:19 _CustomZone.runUnary
dart:async/zone.dart 1244:7 _CustomZone.runUnaryGuarded
dart:async/stream_impl.dart 341:11 _BufferingStreamSubscription._sendData
dart:async/stream_impl.dart 271:7 _BufferingStreamSubscription._add
dart:async/stream_controller.dart 733:19 _SyncStreamControllerDispatch._sendData
dart:async/stream_controller.dart 607:7 _StreamController._add
dart:async/stream_controller.dart 554:5 _StreamController.add
dart:_http/http_parser.dart 394:19 _HttpParser._headersEnd
dart:_http/http_parser.dart 750:15 _HttpParser._doParse
dart:_http/http_parser.dart 324:7 _HttpParser._parse
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
dart:async/zone.dart 1335:19 _CustomZone.runUnary
dart:async/zone.dart 1244:7 _CustomZone.runUnaryGuarded
dart:async/stream_impl.dart 341:11 _BufferingStreamSubscription._sendData
dart:async/stream_impl.dart 271:7 _BufferingStreamSubscription._add
dart:async/stream_controller.dart 733:19 _SyncStreamControllerDispatch._sendData
dart:async/stream_controller.dart 607:7 _StreamController._add
dart:async/stream_controller.dart 554:5 _StreamController.add
dart:io-patch/socket_patch.dart 2166:41 _Socket._onData
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1444:13 _rootRunUnary
dart:async/zone.dart 1335:19 _CustomZone.runUnary
dart:async/zone.dart 1244:7 _CustomZone.runUnaryGuarded
dart:async/stream_impl.dart 341:11 _BufferingStreamSubscription._sendData
dart:async/stream_impl.dart 271:7 _BufferingStreamSubscription._add
dart:async/stream_controller.dart 733:19 _SyncStreamControllerDispatch._sendData
dart:async/stream_controller.dart 607:7 _StreamController._add
dart:async/stream_controller.dart 554:5 _StreamController.add
dart:io-patch/socket_patch.dart 1702:33 new _RawSocket.<fn>
dart:io-patch/socket_patch.dart 1213:14 _NativeSocket.issueReadEvent.issue
dart:async/schedule_microtask.dart 40:21 _microtaskLoop
dart:async/schedule_microtask.dart 49:5 _startMicrotaskLoop
dart:isolate-patch/isolate_patch.dart 120:13 _runPendingImmediateCallback
dart:isolate-patch/isolate_patch.dart 185:5 _RawReceivePortImpl._handleMessage
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async/stream_impl.dart 134:17 _BufferingStreamSubscription._registerDataHandler
dart:async/stream_impl.dart 108:19 new _BufferingStreamSubscription.zoned
dart:async/stream_impl.dart 103:14 new _BufferingStreamSubscription
dart:async/stream_controller.dart 806:9 new _ControllerSubscription
dart:async/stream_controller.dart 637:47 _StreamController._subscribe
dart:async/stream_controller.dart 786:19 _ControllerStream._createSubscription
dart:async/stream_impl.dart 473:9 _StreamImpl.listen
dart:_http/http_impl.dart 3183:31 _HttpServer.listen
package:appengine/src/server/server.dart 56:14 AppEngineHttpServer.run.<fn>
package:stack_trace/src/stack_zone_specification.dart 126:26 StackZoneSpecification._registerUnaryCallback.<fn>.<fn>
package:stack_trace/src/stack_zone_specification.dart 208:15 StackZoneSpecification._run
package:stack_trace/src/stack_zone_specification.dart 126:14 StackZoneSpecification._registerUnaryCallback.<fn>
dart:async/zone.dart 1436:47 _rootRunUnary
dart:async/zone.dart 1335:19 _CustomZone.runUnary
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async/future_impl.dart 348:23 Future.then
package:appengine/src/server/server.dart 50:10 AppEngineHttpServer.run
package:appengine/src/appengine_internal.dart 54:9 runAppEngine.<fn>
package:appengine/src/appengine_internal.dart 110:20 _withAppEngineServicesInternal.<fn>
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async-patch/async_patch.dart 45:22 _asyncThenWrapperHelper
package:appengine/src/appengine_internal.dart _withAppEngineServicesInternal.<fn>
package:gcloud/service_scope.dart 205:19 _ServiceScope._fork.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
dart:async/zone.dart 1863:10 _runZoned
dart:async/zone.dart 1785:10 runZoned
package:gcloud/service_scope.dart 204:12 _ServiceScope._fork
package:gcloud/service_scope.dart 102:30 fork
package:appengine/src/appengine_internal.dart 101:10 _withAppEngineServicesInternal
package:appengine/src/appengine_internal.dart 51:10 runAppEngine
package:appengine/appengine.dart 77:10 runAppEngine
package:pub_dev/shared/handler_helpers.dart 50:9 runHandler
package:pub_dev/service/entrypoint/frontend.dart 71:11 _main.<fn>
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async-patch/async_patch.dart 45:22 _asyncThenWrapperHelper
package:pub_dev/service/entrypoint/frontend.dart _main.<fn>
package:pub_dev/service/services.dart 61:43 withServices.<fn>
package:pub_dev/service/services.dart 61:23 withServices.<fn>
package:gcloud/service_scope.dart 205:19 _ServiceScope._fork.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
dart:async/zone.dart 1863:10 _runZoned
dart:async/zone.dart 1785:10 runZoned
package:gcloud/service_scope.dart 204:12 _ServiceScope._fork
package:gcloud/service_scope.dart 102:30 fork
package:pub_dev/service/services.dart 61:18 withServices
package:pub_dev/service/entrypoint/frontend.dart 60:9 _main
===== asynchronous gap ===========================
dart:async/zone.dart 1356:19 _CustomZone.registerUnaryCallback
dart:async-patch/async_patch.dart 45:22 _asyncThenWrapperHelper
package:pub_dev/service/entrypoint/_isolate.dart 282:24 _wrapper.<fn>.<fn>
package:pub_dev/service/entrypoint/_isolate.dart 279:25 _wrapper.<fn>.<fn>
package:stack_trace/src/chain.dart 94:24 Chain.capture.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
dart:async/zone.dart 1863:10 _runZoned
dart:async/zone.dart 1785:10 runZoned
package:stack_trace/src/chain.dart 92:12 Chain.capture
package:pub_dev/service/entrypoint/_isolate.dart 279:17 _wrapper.<fn>
package:pub_dev/service/entrypoint/_isolate.dart 278:16 _wrapper.<fn>
package:pub_dev/service/services.dart 206:36 _withPubServices.<fn>.<fn>.<fn>
package:pub_dev/service/services.dart 206:16 _withPubServices.<fn>.<fn>.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
package:pub_dev/service/services.dart 206:12 _withPubServices.<fn>.<fn>
package:gcloud/service_scope.dart 205:19 _ServiceScope._fork.<fn>
dart:async/zone.dart 1428:13 _rootRun
dart:async/zone.dart 1328:19 _CustomZone.run
dart:async/zone.dart 1863:10 _runZoned
dart:async/zone.dart 1785:10 runZoned
package:gcloud/service_scope.dart 204:12 _ServiceScope._fork
package:gcloud/service_scope.dart 102:30 fork
package:pub_dev/service/services.dart 204:18 _withPubServices.<fn>
any update on this guys . stuck on same issue while using flutter for windows desktop app. I'm in corporate network
gRPC Error (code: 14, codeName: UNAVAILABLE, message: Error making call: Null check operator used on a null value, details: null, rawResponse: null, trailers: {})
Hi @gitsofkhaleel, could you add some details for me to try and reproduce your error?
