ANDROID_SDK_ROOT "Cannot find AVD system path" "Broken AVD system path"

• MacOS Mojave 10.14.6

• commandlinetools-mac-6200805_latest.zip

• 出错了！什么原因，网上搜懵了

> ./emulator/emulator -avd '29d-x64'
PANIC: Broken AVD system path. Check your ANDROID_SDK_ROOT value [/Volumes/Document/android_sdk]!

• 各种信息

> pwd
/Volumes/Document/android_sdk

> ./tools/bin/sdkmanager --sdk_root=$ANDROID_SDK_ROOT --list|head -n 10
Installed packages:=====================] 100% Computing updates...
  Path                                    | Version | Description                    | Location
  -------                                 | ------- | -------                        | -------
  build-tools;29.0.3                      | 29.0.3  | Android SDK Build-Tools 29.0.3 | build-tools/29.0.3/
  emulator                                | 30.0.5  | Android Emulator               | emulator/
  patcher;v4                              | 1       | SDK Patch Applier v4           | patcher/v4/
  platforms;android-29                    | 4       | Android SDK Platform 29        | platforms/android-29/
  system-images;android-29;default;x86_64 | 7       | Intel x86 Atom_64 System Image | system-images/android-29/default/x86_64/
  tools                                   | 1.0.0   | Android SDK Tools 1            | tools/

> ./tools/bin/avdmanager list 'avd'
Available Android Virtual Devices:
    Name: 29d-x64
    Path: /Volumes/Document/android_sdk/avd
  Target: Default Android System Image
          Based on: Android 10.0 (Q) Tag/ABI: default/x86_64
  Sdcard: 512 MB

> fgrep 'image.sysdir' ./avd/config.ini
image.sysdir.1=android_sdk/system-images/android-29/default/x86_64/