Big Sur Update Leads to Multiple Load Error Rails Ruby

Question

After updating to Big Sur, my ruby (2.6.3) on rails (5.2.1) application repeatedly has LoadError when running rails s or rails db:migrate.

I have tried uninstall and reinstall rails multiple time but it will only work 1 or 2 times before encountering LoadError again.

Here are some samples of the errors (Note that they are different)

/Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require': cannot load such file -- new_relic/agent/instrumentation/sinatra/transaction_namer (LoadError)

/Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require': cannot load such file -- /Library/Ruby/Gems/2.6.0/gems/newrelic_rpm-6.8.0.360/lib/new_relic/agent/instrumentation/active_merchant.rb (LoadError)

/Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require': cannot load such file -- /Library/Ruby/Gems/2.6.0/gems/newrelic_rpm-6.8.0.360/lib/new_relic/agent/instrumentation/typhoeus.rb (LoadError)

/Library/Ruby/Gems/2.6.0/gems/activesupport-5.2.1/lib/active_support/dependencies.rb:287:in `require': cannot load such file -- ffaker/company (LoadError)

---

Update: currently trying installing rails via rvm to see if this consistent error goes away.

Opus

Answer 1

You should not use Apple's Ruby installation. That installation exists solely for internal use by Apple itself.

My guess is that the System Integrity Protection keeps deleting and/or restoring stuff that you changed in the system protected directories.

For more information, see for example

• macOS 10.15 Catalina Release Notes
• PSA: Do not use system Ruby
• Why you shouldn't use the System Ruby
• If possible, do not use the ruby system version on Mac OSX

Elgon

Thanks! I think your guess is correct. I finally get the rbenv to work and then install the gems on rbenv path and no more such issues. – Opus