please Help me I can't fix this error

[SparrowCoding]

I use react native first time I can't fix it
Android
✖ Adb - No devices and/or emulators connected. Please create emulator with Android Studio or connect Android device.
✓ JDK - Required to compile Java code
✓ Android Studio - Required for building and installing your app on Android
✖ Android SDK - Required for building and installing your app on Android

• Versions found: N/A
• Version supported: 33.0.0
  ✓ ANDROID_HOME - Environment variable that points to your Android SDK installation

and "adb devices" > adb devices
List of devices attached

what can i do for it fix the error
Plsease help me I've been staying up all night for two days to fix this error.

[BenSalvesen]

hey, not sure if this will help but for me, if I do not have device turned on through Android studio and then I type "adb devices" it will just say "list of devices attached". But if I turn a device on, and then type "adb devices", the emulator will show up. So make sure you turn your emulator on before you run your project

[pnthach95]

Your information is useless. Show error log when you run project

[szymonrybczak]

hey, basically role of doctor command is to check if your environment is correctly prepared for React Native development. For your problem @SparrowCoding you just simply need to install an emulator or plug a physical device. You can validate if the destination is available by running adb devices in your shell.

For SDK problem, sometimes envinfo tool that we use for checking informations have troubles with detecting versions - so the best way to validate your setup is try running a fresh app or an app that you're working on 👍