'Command failed: adb shell am start

Getting error while trying to run this command npx react-native run-android for my react native android app



Solution 1:[1]

Usually it happens when Android path variable resets. Try following:

export ANDROID_HOME=$HOME/Library/Android/sdk
export PATH=$PATH:$ANDROID_HOME/emulator
export PATH=$PATH:$ANDROID_HOME/tools
export PATH=$PATH:$ANDROID_HOME/tools/bin
export PATH=$PATH:$ANDROID_HOME/platform-tools

Just paste these commands in your terminal and check if adb command starts working.

Sources

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Source: Stack Overflow

Solution Source
Solution 1 Wai Ha Lee