Fix

Author: mrcse

example/pubspec.lock

@@ -397,7 +397,7 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "0.0.7"
+    version: "1.0.0"
   package_config:
     dependency: transitive
     description:

example/pubspec.yaml

@@ -19,7 +19,7 @@ publish_to: "none" # Remove this line if you wish to publish to pub.dev
 version: 1.0.0+1
 
 environment:
-  sdk: ^3.5.4
+  sdk: ">=2.17.0 <4.0.0"
 
 # Dependencies specify other packages that your package needs in order to work.
 # To automatically upgrade your package dependencies to the latest versions

pubspec.yaml

@@ -5,7 +5,7 @@ homepage: https://github.com/Cuboid-Inc/open_mail
 repository: https://github.com/Cuboid-Inc/open_mail
 
 environment:
-  sdk: ^3.5.4
+  sdk: ">=2.17.0 <4.0.0"
   flutter: ">=1.17.0"
 
 dependencies: