Failing run via Bundler: `ensure in take_off': uninitialized constant FastlaneCore::UpdateChecker (NameError) about fastlane HOT 5 OPEN

For some reason it all led to nkf gem missing (somehow).

Running gem install nkf fixed the issue (should that be a dependency of fastlane?)

from fastlane.

Reopening again - this issue is still happening. Not sure if it has anything to do with Ruby version, but it's pretty random.

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Started to expirience this issue too, unable to find a solution. 5 issues about this problem are autoclosed already. I am using M1 mac-mini, alongside with thread error getting another one:
require': dlopen(/Users/user/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/nkf-0.2.0/lib/nkf.bundle, 0x0009): tried: '/Users/user/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/nkf-0.2.0/lib/nkf.bundle' (mach-o file, but is an incompatible architecture (have (x86_64), need (arm64e))) - /Users/user/.rbenv/versions/2.7.5/lib/ruby/gems/2.7.0/gems/nkf-0.2.0/lib/nkf.bundle (LoadError)

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We tried to move to Ruby 3.3.0 and seems like it works, we will keep testing it.

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As for me, helped full wipe and brew, rbenv and gems installation with this guide

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