casein 5.4.0 authlogic

[artcoder87]

Bundler could not find compatible versions for gem "activemodel": In snapshot (Gemfile.lock): activemodel (= 5.0.7.2)

In Gemfile: casein (~> 5.4.0) was resolved to 5.4.0.0, which depends on authlogic (~> 5.0.0) was resolved to 5.0.2, which depends on activemodel (>= 5.2, < 6.1)

rails (~> 5.0.0) was resolved to 5.0.7.2, which depends on
  activemodel (= 5.0.7.2)

Running bundle update will rebuild your snapshot from scratch, using only the gems in your Gemfile, which may resolve the conflict.

[artcoder87]

that error is just about trying to install the gem