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Ruby

Erin Lowell
Erin Lowell
4,201 Points

Vagrant cannot forward to specified ports

I was attempting to install the treehouse VM through terminal. I got this message:

"Vagrant cannot forward the specified ports on this VM, since they would collide with some other application that is already listening on these ports. The forwarded port to 3000 is already in use on the host machine.

To fix this, modify your current projects Vagrantfile to use another port. Example, where '1234' would be replaced by a unique host port:

config.vm.network :forwarded_port, guest: 3000, host: 1234

Sometimes, Vagrant will attempt to auto-correct this for you. In this case, Vagrant was unable to. This is usually because the guest machine is in a state which doesn't allow modifying port forwarding.

I know 3000 is where rails is installed, because I see it when I go to localhost:3000."

I'm not sure what to do next. Any help would be appreciated.