include_file_not_found

The URI '{0}' included in '{1}' can't be found when analyzing '{2}'.

The analyzer produces this diagnostic when an include key in an analysis options file specifies a URI that either can't be resolved or doesn't exist.

The following code produces this diagnostic because the URI refers to a package that doesn't exist:

// %uri="analysis_options.yaml"
include: package:lint/recommended.yaml

If the URI is incorrect, replace it with a correct URI:

// %uri="analysis_options.yaml"
include: package:lints/recommended.yaml

If the URI is correct but the package isn't a dependency, add a dev_dependency for the package to the pubspec.yaml file and run dart pub get or flutter pub get.