Unable to find a matching variant of project :UnityExport: , Working in debug but not as release

[TarekMedhat]

The project is working fine with "flutter run" in debug mode.

But getting an error when trying to run "flutter run --release" or generating the apk "flutter build apk --release"

running as release results the following exception or build apk:
`FAILURE: Build failed with an exception.

• What went wrong:
  Execution failed for task ':app:lintVitalRelease'.

Could not resolve all artifacts for configuration ':flutter_unity_widget:profileRuntimeClasspath'.
Could not resolve project :UnityExport.
Required by:
project :flutter_unity_widget
> Unable to find a matching variant of project :UnityExport:
- Variant 'debugApiElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'profile' and found incompatible value 'debug'.
- Found com.android.build.api.attributes.VariantAttr 'debug' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found incompatible value 'java-api'.
- Variant 'debugRuntimeElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'profile' and found incompatible value 'debug'.
- Found com.android.build.api.attributes.VariantAttr 'debug' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found compatible value 'java-runtime'.
- Variant 'releaseApiElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'profile' and found incompatible value 'release'.
- Found com.android.build.api.attributes.VariantAttr 'release' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found incompatible value 'java-api'.
- Variant 'releaseRuntimeElements':
- Required com.android.build.api.attributes.BuildTypeAttr 'profile' and found incompatible value 'release'.
- Found com.android.build.api.attributes.VariantAttr 'release' but wasn't required.
- Required com.android.build.gradle.internal.dependency.AndroidTypeAttr 'Aar' and found compatible value 'Aar'.
- Required org.gradle.usage 'java-runtime' and found compatible value 'java-runtime'.
`

[TarekMedhat]

#Solved by adding
buildTypes { //... // profile { matchingFallbacks = ['debug', 'release'] } }
to UnityExport project build.gradle