Unable to launch any devices

Facing below issue. so unable to do mobile automation.
Plugin [id: ‘com.android.application’, version: ‘8.0.0’, apply: false] was not found in any of the following sources:

can you add more details?

please provide more details as @Giuma said.
some suggestions meanwhile:
Make sure you created a proper emulator and all the details you specify to appium(version, avd name etc.) are correct.
Make sure all your paths are correct as well(when you launch appium).
If you cannot launch the avd manually, make sure your avd’s ABI is suitable for your current machine.
And’ make sure you have enough space available on your computer.