expo doctor not supported, expo-cli doctor not fixing dependencies

I am unable to run npx expo doctor

$ npx expo doctor

  $ expo doctor is not supported in the local CLI, please use expo-cli doctor instead

Tried out expo-cli doctor --fix-dependencies but it does not appear to have changed my packages.json.

$ expo-cli doctor --fix-dependencies
WARNING: The legacy expo-cli does not support Node +17. Migrate to the versioned Expo CLI (npx expo).
Expected package @expo/config-plugins@~6.0.0
Found invalid:
  @expo/config-plugins@4.1.1
  (for more info, run: npm why @expo/config-plugins)

How do I fix the invalid packages issue?

I upgraded to the latest Expo SDK 49 and encountered the same problem as you. The following commands worked for me.

npx expo-doctor

then

npx expo install --fix

Documentation is here
https://docs.expo.dev/more/expo-cli/

The commands below no longer worked for me.

1. npx expo doctor --fix-dependencies

   result in:

   $ expo doctor is not supported in the local CLI, please use npx
   expo-doctor instead

2. expo-cli doctor --fix-dependencies

   result in:

   'expo-cli doctor' is not supported for SDK 46 and higher. Use 'npx
   expo-doctor' instead.

1. First make a copy of your current Expo project.
2. Delete all your node modules.
3. Install node modules with command

yarn

4. Then your issue of

Expected package @expo/config-plugins@~6.0.0
Found invalid:
  @expo/config-plugins@4.1.1
  (for more info, run: npm why @expo/config-plugins)

can be solved.

From your error messages, installing the latest version should fix your problems.

npm install @expo/config-plugins@latest

Then use the command below to check if your expo config-plugin has been updated to a version equal to or higher than 6.00, if it is still lower, retry the above command with the --force flag

npm ls @expo/config-plugins

Once that is done, run the command below to fix any other issue.

expo-cli doctor --fix-dependencies