Fix Android Studio error "Local path doesn't exist."
There are many solutions. I will begins with easiest solution.
a. Sync project with Gradle file.
b. Build/Rebuild project.
c. Restart Android Studio then do step a,b.
d. search *.iml in your project directory
which named as your_project_name.iml
<option name="APK_PATH" value="/build/apk/your_apk_file_name.apk" /> under <configuration>