snapshot error

[J4ckTh3R1qp3r]

hi, i am making an angular dart website and cant figure out the problem with webdev serve/build commands. I had this error with master branch and made another from few days ago commit. the new commit worked fine and i just copied and pasted all the changes from broken master branch. but then i merged new working branch to master and it stopped working with the same error. If i switch to 2 days ago commit i can run webdev serve and if i switch to the latest commit then webdev refreshes and works fine until i stop it. After stop i run webdev serve and the same error appears. Sorry if I am not providing all necessary information, I am new to programming. Would appreciate any help! Here is the error:

paul@iMac-Paul quantumart_old % webdev serve
[SEVERE] Failed to snapshot build script .dart_tool/build/entrypoint/build.dart.
[SEVERE] This is likely caused by a misconfigured builder definition.
[SEVERE] ../../../../.pub-cache/hosted/pub.dartlang.org/test_core-0.3.7/lib/test_core.dart:69:5: Error: 'unawaited' is imported from both 'package:meta/meta.dart' and 'package:test_api/src/utils.dart'. unawaited(Future.error('Dummy exception to set exit code.')); ^^^^^^^^^
Unhandled exception:
Bad state: Unable to start build daemon.
#0 _handleDaemonStartup (package:build_daemon/client.dart:82:5)

#1 BuildDaemonClient.connect (package:build_daemon/client.dart:183:11)

#2 connectClient (package:webdev/src/daemon_client.dart:17:23)
#3 _startBuildDaemon (package:webdev/src/serve/dev_workflow.dart:26:18)
#4 DevWorkflow.start (package:webdev/src/serve/dev_workflow.dart:191:24)
#5 ServeCommand.run (package:webdev/src/command/serve_command.dart:101:27)

#6 CommandRunner.runCommand (package:args/command_runner.dart:197:27)
#7 _CommandRunner.runCommand (package:webdev/src/webdev_command_runner.dart:38:24)
#8 CommandRunner.run. (package:args/command_runner.dart:112:25)

[jakemac53]

You will need to pin the meta package to version 1.1.8 (even if you don't directly depend on it today):

dependencies:
  meta: 1.1.8

The problem is that you are not on the latest version of test, because angular doesn't allow the latest analyzer (making some assumptions about your setup, but most likely this is the issue).