https://expo.io/@serranoarevalo/fira
it seems the expo preview link doesn't work without updating the version to latest.

What I did so far:

1. yarn install
   -> got an error: my expo requires expo version at least v34.

2. Followed this blog article to update: https://blog.expo.io/expo-sdk-34-is-now-available-4f7825239319

• expo update 34.0.0
• react-native to "https://github.com/expo/react-native/archive/sdk-34.0.0.tar.gz"
• expo to "^34.0.3"
• react to "16.8.3"
• react-navigation to "^3.11.1"
• jest-expo to "^34.0.0"
  -> Then I've got "Invariant Violation: The navigation prop is missing for this navigator
  " error.

3. downgrade "react-navigation" to "^2.18.2" again.
   -> The following APIs have moved to separate packages and importing them from the "expo" package is no longer supported: Asset.

4. expo install expo-asset
   -> But, still having the same error.
   What am I missing?

##System.
MacOS Mojav
v: 10.14.5

###Step.
1, clone your repos to my computer,
2, Delage expo,
3, cd: ios: pod install (error stage)
4, install git-lfs
5, git checkout -f HEAD
and reinstall pod and then still get the error as below.

##Error result

[!] Error installing ExpoKit
[!] Failed to download 'ExpoKit': [!] /usr/bin/git clone http://github.com/expo/expo.git /var/folders/0v/zzp9k_1x2q73rqmm2hbp6hmc0000gn/T/d20190711-2024-xmf8u --template= --single-branch --depth 1 --branch ios/2.9.0

Cloning into '/var/folders/0v/zzp9k_1x2q73rqmm2hbp6hmc0000gn/T/d20190711-2024-xmf8u'...
warning: redirecting to https://github.com/expo/expo.git/
Note: checking out '9b7fe92d47ae9f0614a42148ec5c46f12678eff1'.

You are in 'detached HEAD' state. You can look around, make experimental
changes and commit them, and you can discard any commits you make in this
state without impacting any branches by performing another checkout.

If you want to create a new branch to retain commits you create, you may
do so (now or later) by using -b with the checkout command again. Example:

git checkout -b

git-lfs filter-process: git-lfs: command not found
fatal: the remote end hung up unexpectedly
warning: Clone succeeded, but checkout failed.
You can inspect what was checked out with 'git status'
and retry the checkout with 'git checkout -f HEAD'