`const_get': uninitialized constant [class] (NameError)` after file save in Docker with Spring

ruby-on-rails spring docker docker-compose ruby-on-rails-5

This issue is discussed here: rails/spring#519

The workaround, as hinted in that issue, is to disable eager loading.

In config/environments/test.rb you change;

config.eager_load = true

config.eager_load = false

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