$ bundle install --jobs=3 --retry=3 --deployment Fetching gem metadata from https://rubygems.org/........ Fetching version metadata from https://rubygems.org/.. Fetching dependency metadata from https://rubygems.org/. Your bundle is locked to credentials_manager (0.16.2), but that version could not be found in any of the sources listed in your Gemfile. If you haven't changed sources, that means the author of credentials_manager (0.16.2) has removed it. You'll need to update your bundle to a different version of credentials_manager (0.16.2) that hasn't been removed in order to install.
My legacy environments were fixed old fastlane version (1.103.0) and builds started breaking because credentials_manager version 0.16.2 has been removed from rubygems.
# frozen_string_literal: true source "https://rubygems.org" -gem "fastlane", "1.109.0" +gem "fastlane", "2.5.0"