Rails newbie need help: got an error running "rails generate devise:install"

Question

Here is the error message:

vendor/bundle/ruby/2.7.0/gems/bootsnap-1.4.9/lib/bootsnap/load_path_cache/core_ext/
kernel_require.rb:23:in `require': cannot load such file -- e2mmap (LoadError)

All I did before this step was

gem 'devise'

and

bundle install

Cannot find any related solution online. Please give me some advice!

Answer 1

A couple of things to try:

Update bootsnap

bundle update bootsnap

Clear the bootsnap cache

go to the project home, then cd into tmp/cache
delete bootsnap-load-path-cache and bootsnap-compile-cache

Suggestions taken from this thread on the bootsnap repo: https://github.com/Shopify/bootsnap/issues/73

Answer 2

Try stopping the spring and then trying again

Use this in the terminal.

spring stop