produce error when node_path is defined but the directory does not exist on disk locally

plugins/provisioners/chef/config/chef_zero.rb

@@ -79,6 +79,13 @@ module VagrantPlugins
 
           if !present?(Array(nodes_path))
             errors << I18n.t("vagrant.config.chef.nodes_path_empty")
+          else
+            missing_paths = Array.new
+            nodes_path.each { |dir| missing_paths << dir[1] if !File.exists? dir[1] }
+            # If it exists at least one path on disk it's ok for Chef provisioning
+            if missing_paths.size == nodes_path.size
+              errors << I18n.t("vagrant.config.chef.nodes_path_missing", path: missing_paths.to_s)
+            end
           end
 
           if environment && environments_path.empty?

templates/locales/en.yml

@@ -1579,6 +1579,8 @@ en:
           Missing required value for `chef.nodes_path'.
         environment_path_missing: |-
           Environment path not found: %{path}
+        nodes_path_missing: |-
+          Path specified for `nodes_path` does not exist: %{path}
         environment_path_required: |-
           When 'environment' is specified, you must provide 'environments_path'.
         cookbooks_path_missing: |-

test/unit/plugins/provisioners/chef/config/chef_zero_test.rb

@@ -110,6 +110,17 @@ describe VagrantPlugins::Chef::Config::ChefZero do
       end
     end
 
+    context "when an element of nodes_path does not exist on disk" do
+      it "returns an error" do
+        nodes_path = ["/path/to/nodes/that/will/never/exist"]
+        subject.nodes_path = nodes_path
+        subject.finalize!
+        expect(errors).to include(I18n.t("vagrant.config.chef.nodes_path_missing",
+          path: nodes_path
+        ))
+      end
+    end
+
     context "when the nodes_path is an empty array" do
       it "returns an error" do
         subject.nodes_path = []