Mac android emulator panic: missing emulator engine program for 'x86' cpu.

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I use a relatively new Android SDK, installed in the d drive, and then I set the environment variables to make the avd device stored in the d drive, I start the emulator in ide is no problem, the emulator uses the x86 architecture, but When I start the device through the cmd emulator command, an error is reported PANIC: Missing emulator engine program for 'x86' CPU.