rails server bin/rails:6: warning: already initialized constant APP_PATH error

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I couldn’t find the an_initilizer.rb in my directory and I tried uninstalling/installing the spring gem but it didn’t work.

However I did managed to finally get it working.

Apparently there is some conflict with spring and rails 4+.

I needed to run: 

rake rails:update:bin

But I ran across another error: 

Library not loaded: libmysqlclient.18.dylib

I ran the following command which I found on another stackoverflow post:

sudo ln -s /usr/local/mysql/lib/libmysqlclient.18.dylib /usr/lib/libmysqlclient.18.dylib

Then ran the original command:

 rake rails:update:bin

Then run the server command: 

 rails s

And now my WebBrick Server is running.

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