Checkout the build.gradle
for OpenCVLibrary430. Since you are using it as a library, sometimes it defined as application.
//apply plugin: 'com.android.application'
apply plugin: 'com.android.library'
Another check could be your settings.gradle
file. include
the right file there after changes like include ':openCVLibrary430'
Lastly, rather than clean project, try "File" -> "Invalidate Caches...", and select "Invalidate and Restart" option.
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