FileSystemException: Exists failed, path = 'C:\flutter_app\assets\my_asset.json\' (OS Error: The filename, directory name, or volume label syntax is incorrect.
, errno = 123)
at _Directory.existsSync(directory_impl.dart:92)
at ForwardingFileSystemEntity.existsSync(forwarding_file_system_entity.dart:43)
at ErrorHandlingDirectory.existsSync.<anonymous closure>(error_handling_io.dart:492)
at _runSync(error_handling_io.dart:590)
at ErrorHandlingDirectory.existsSync(error_handling_io.dart:491)
at ManifestAssetBundle._parseAssetsFromFolder(asset.dart:886)
at ManifestAssetBundle._parseAssets(asset.dart:799)
at ManifestAssetBundle.build(asset.dart:261)
at <asynchronous gap>(async)
at ResidentWebRunner._updateDevFS(resident_web_runner.dart:503)
at <asynchronous gap>(async)
at ResidentWebRunner.restart(resident_web_runner.dart:385)
at <asynchronous gap>(async)
at TerminalHandler._commonTerminalInputHandler(resident_runner.dart:1774)
at <asynchronous gap>(async)
at TerminalHandler.processTerminalInput(resident_runner.dart:1827)
at <asynchronous gap>(async)