Error running `expo upgrade` to SDK 36

I tried to upgrade expo to latest version SDK 36 but got this weird error:
spawn yarnpkg ENOENT

It’s during the step yarn add expo@^36.0.0.

I answered YES to all questions just in case.

? You are already using the latest SDK version. Do you want to run the update anyways? This may be useful to ensure th
at all of your packages are set to the correct version. Yes
? You might have to upgrade your iOS simulator. Before you can do that, you have to run the simulator. Do you want to
upgrade it now? Yes
Uninstalling Expo client from iOS simulator.
Installing Expo client on iOS simulator

? You might have to upgrade your Android client. Before you can do that, you have to run the emulator, or plug a devic
e in. Do you want to upgrade it now? Yes

Expo CLI 3.13.1 environment info:
System:
OS: macOS 10.15.3
Shell: 3.2.57 - /bin/bash
Binaries:
Node: 10.16.3 - ~/.nvm/versions/node/v10.16.3/bin/node
npm: 6.9.0 - ~/.nvm/versions/node/v10.16.3/bin/npm
IDEs:
Android Studio: 3.5 AI-191.8026.42.35.6010548
Xcode: 11.2/11B52 - /usr/bin/xcodebuild
npmPackages:
expo: ^32.0.0 => 32.0.6
react: 16.5.0 => 16.5.0
react-native: https://github.com/expo/react-native/archive/sdk-32.0.0.tar.gz => 0.57.1
react-navigation: ^3.2.1 => 3.2.1
npmGlobalPackages:
expo-cli: 3.13.1

Nevermind, I had to install yarn by

brew install yarn

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