How to solve: Consider adding the following to ~/.profile: export LANG=en_US.UTF-8

I’m developing in Flutter from last 2 years and whenever I update my flutter version or xcode version, I encounter this issue. And everytime google comes to my rescue. As this issue is so common I decided I should put this here for me and all of us, in case I get any update I will update it here with latest fix.

Following is how i’m able to solve it till date:

So, as you know Cocoapods is dependency manager for Objective-C, same as npm for TypeScript. In earlier version it was issuing warning for users to define LANG in ~/.profile or ~/.zsrh, but it was a soft warning and users can ignore it.

But with recent versions like 1.11.2 its becoming more aggressive and wants LANG to be defined, otherwise failing to build for iOS. I found that if we install 1.10.2 version of Cocoapods this issue will be resolved

First step, uninstall current version of cocoapods

sudo gem uninstall cocoapodsCopy

Install specific 1.10.2 version of it

sudo gem install cocoapods:1.10.2Copy

Exit and restart your IDE.

it should resolve it and your build should be successfull.

Way 2:

Update your .profile with necessary additions:

What works for me is to include following in .profile along with LANG

export LC_ALL=en_US.UTF-8
export LANGUAGE=en_US.UTF-8
export LANG=en_US.UTF-8
export LC_COLLATE=en_US.UTF-8
export LC_CTYPE=en_US.UTF-8
export LC_MESSAGES=en_US.UTF-8
export LC_MONETARY=en_US.UTF-8
export LC_NUMERIC=en_US.UTF-8
export LC_TIME=en_US.UTF-8Copy

Delete podfile.lock

run following:

cd ios
pod deintegrateCopy

Exit and Restart IDE. After restart run following

pod installCopy

Write down in comments if nothing solves it, I will try to update this article to include other cases too.

Happy Coding