Error: Field ‘wLanguage’ cannot be nullable or have type ‘Null’, it must be `int`, `double`, `Pointer`, or a subtype of `Struct` or `Union`

I finally fix my problem by overriding these packages in my project’s pubspec.yaml

dependency_overrides:
  package_info_plus: ^4.0.1
  wakelock_windows: any
  win32: any

or

dependency_overrides:
  package_info_plus: any

Overriding the package_info_plus to ^4.0.1 gave me the following error message because of my project dependencies.

Because no versions of wakelock_windows match >0.2.1 <0.3.0 and wakelock_windows <0.2.1 depends on win32 ^2.0.0, wakelock_windows <0.2.1-∞ or >0.2.1 <0.3.0 requires win32 ^2.0.0.
And because wakelock_windows 0.2.1 depends on win32 ^3.0.0, wakelock_windows <0.3.0 requires win32 ^2.0.0 or ^3.0.0.
And because package_info_plus >=4.0.1 depends on win32 >=4.0.0 <6.0.0 and wakelock 0.6.2 depends on wakelock_windows ^0.2.0, package_info_plus >=4.0.1 is incompatible with wakelock 0.6.2.
Because chewie >=1.3.5 depends on wakelock ^0.6.2 and no versions of wakelock match >0.6.2 <0.7.0, chewie >=1.3.5 requires wakelock 0.6.2.
Thus, package_info_plus >=4.0.1 is incompatible with chewie >=1.3.5.
So, because start depends on both chewie ^1.4.0 and package_info_plus ^4.0.1, version solving failed.

If you have a similar message after overriding the package_info_plus, you can check the dependent packages and add them to dependency_overrides and set the version to any as in my above example.

The Any keyword can be used to specify that any version of a package is acceptable. This can be useful if you want to make sure that your app is compatible with the latest version of a package, or if you want to avoid breaking changes that may be introduced in a future version of a package.