You run bundle install but get an error: Could not find gem 'rails (~> 6.1.0)' in any repository. What is the likely cause?

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Ruby - Gems and Bundler

You run bundle install but get an error: Could not find gem 'rails (~> 6.1.0)' in any repository. What is the likely cause?

ABundler is outdated and cannot run

BRuby is not installed on the system

CThe Gemfile is missing from the project

DThe specified gem version is not available in the gem sources

Step-by-Step Solution

Solution:

Step 1: Analyze the error message
The error says the gem version '~> 6.1.0' cannot be found in any repository, meaning it is unavailable or misspelled.
Step 2: Exclude other causes
Ruby missing or Gemfile missing would cause different errors; bundler outdated usually warns differently.
Final Answer:
The specified gem version is not available in the gem sources -> Option D
Quick Check:
Gem not found error = Version unavailable [OK]

Quick Trick: Check gem version availability if bundler can't find it [OK]

Common Mistakes:

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