"liquidart create newapp" Unhandled exception: Bad state: No element

[EvErTrEk]

Unhandled exception:
Bad state: No element
#0 ListMixin.firstWhere (dart:collection/list.dart:167:5)
#1 firstMetadataOfType (package:replica/src/mirror_context.dart:70:23)
#2 new MirrorContext._. (package:replica/src/mirror_context.dart:31:22)
#3 WhereIterator.moveNext (dart:_internal/iterable.dart:436:13)
#4 new _GrowableList.ofOther (dart:core-patch/growable_array.dart:198:26)
#5 new GrowableList.of (dart:core-patch/growable_array.dart:152:26)
#6 new List.of (dart:core-patch/array_patch.dart:50:28)
#7 Iterable.toList (dart:core/iterable.dart:366:12)
#8 new MirrorContext. (package:replica/src/mirror_context.dart:32:8)
#9 instance (package:replica/src/mirror_context.dart:7:41)
#10 instance (package:replica/src/mirror_context.dart)
#11 RuntimeContext.current (package:replica/src/context.dart:10:33)
#12 CLICommand.decode (package:liquidart/src/cli/command.dart:104:27)
#13 CLICommand.showColors (package:liquidart/src/cli/command.dart:64:26)
#14 CLICommand.colorSymbol (package:liquidart/src/cli/command.dart:219:10)
#15 CLICommand.displayError (package:liquidart/src/cli/command.dart:201:12)
#16 CLICommand.process (package:liquidart/src/cli/command.dart:168:7)

#17 main (file:///C:/Users/Everton/AppData/Local/Pub/Cache/hosted/pub.dartlang.org/liquidart-5.0.0-b4/bin/liquidart.dart:9:14)

Unhandled exception:
Bad state: No element
#0 ListMixin.firstWhere (dart:collection/list.dart:167:5)
#1 firstMetadataOfType (package:replica/src/mirror_context.dart:70:23)
#2 new MirrorContext.. (package:replica/src/mirror_context.dart:31:22)
#3 WhereIterator.moveNext (dart:_internal/iterable.dart:436:13)
#4 new _GrowableList._ofOther (dart:core-patch/growable_array.dart:198:26)
#5 new GrowableList.of (dart:core-patch/growable_array.dart:152:26)
#6 new List.of (dart:core-patch/array_patch.dart:50:28)
#7 Iterable.toList (dart:core/iterable.dart:366:12)
#8 new MirrorContext. (package:replica/src/mirror_context.dart:32:8)
#9 instance (package:replica/src/mirror_context.dart:7:41)
#10 instance (package:replica/src/mirror_context.dart)
#11 RuntimeContext.current (package:replica/src/context.dart:10:33)
#12 CLICommand.decode (package:liquidart/src/cli/command.dart:104:27)
#13 CLICommand.showColors (package:liquidart/src/cli/command.dart:64:26)
#14 CLICommand.colorSymbol (package:liquidart/src/cli/command.dart:219:10)
#15 CLICommand.displayError (package:liquidart/src/cli/command.dart:201:12)
#16 CLICommand.process (package:liquidart/src/cli/command.dart:168:7)

#17 main (file:///C:/Users/Everton/AppData/Local/Pub/Cache/hosted/pub.dartlang.org/liquidart-5.0.0-b4/bin/liquidart.dart:9:14)

Dart SDK version: 2.12.3 (stable) (Wed Apr 14 11:02:39 2021 +0200) on "windows_x64"

[AldrinMathew]

@EvErTrEk

This is part of the error caused by the migration to Null Safety of the package. I have been trying to fix this for a day, so far, there is no good news. Leave this issue open. I will post updates related to the issue here.

[AldrinMathew]

I just found out that this issue pertains to the Dart language, and has been reported in the Dart project previously.

dm.metadata
      .firstWhere((im) => im!.reflectee is Operation, orElse: () => null)!
      .reflectee as Operation;

The orElse part of the code is what's causing the error. We have to replace that part with a conditional statement. There are more than 150 parts in the Liquidart project where this pattern of code occurs. I have already started fixing it.

[AldrinMathew]

@EvErTrEk

Please read Issue 7: Liquidart will be rewritten from scratch to understand the status of this issue and the Liquidart project.

[EvErTrEk]

Tanks :)

[EddieKamau]

I had forked Aqueduct for customization, after learning about Liquidart I changed some Aqueduct packages to those of Liquidart.
The packages include safe_yaml from safe_config, replica from runtime, hasher from password_hash, and loner from isolate_executor.
Then I migrated to Null safety & fixed the errors. Now it runs smoothly.
The only difference is ownerId(resourceOwnerId... etc) is changed from int to String(for self needs).
You can checkout the repo at Aqueduct

[AldrinMathew]

@EddieKamau do you mind making a PR to this repo's dev branch from your fork once it is completed? Also, I have sent an email regarding this. Kindly check when you have time.

[EddieKamau]

I will be checking in a few

…

On Wed, May 19, 2021 at 1:36 PM Aldrin Mathew ***@***.***> wrote: @EddieKamau <https://github.com/EddieKamau> do you mind making a PR to this repo's main branch from your fork once it is completed? Also, I have sent an email regarding this. Kindly check when you have time. — You are receiving this because you were mentioned. Reply to this email directly, view it on GitHub <#5 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AJKQX633AMKA7EUCMLOJTT3TOOIC3ANCNFSM43IGXKQA> .

-- *CrazyGenius*