I run my emulator and it showed me this on the build output:
Emulator: emulator: INFO: QtLogger.cpp:68: Critical: Uncaught TypeError: Cannot read property 'update' of undefined (qrc:/html/js/location-mock-web-channel.js:130, (null))
C:\Users\...\.gradle
C:\Users\...\.AndroidStudio3.5\system
C:\Users\...\AppData\Local\Android\Sdk
It redirected me to this website: https://developer.android.com/studio/intro/studio-config?utm_source=android-studio#antivirus-impact . I excluded Android Studio in my McAfee real-time scanning but after I run my emulator again it's very slow compared to before I had the warning.