Error: Could not load plugin

[nij4t]

$ terraform plan

Error: Could not load plugin


Plugin reinitialization required. Please run "terraform init".

Plugins are external binaries that Terraform uses to access and manipulate
resources. The configuration provided requires plugins which can't be located,
don't satisfy the version constraints, or are otherwise incompatible.

Terraform automatically discovers provider requirements from your
configuration, including providers used in child modules. To see the
requirements and constraints, run "terraform providers".

Failed to instantiate provider "github.com/terra-farm/virtualbox" to obtain
schema: Unrecognized remote plugin message: 

This usually means that the plugin is either invalid or simply
needs to be recompiled to support the latest protocol.