modules/mu/config.rb in cloud-mu-3.1.5 vs modules/mu/config.rb in cloud-mu-3.1.6

@@ -75,10 +75,10 @@
     # @return [Hash]: The modified configuration
     def self.manxify(config, remove_runtime_keys: false)
       if config.is_a?(Hash)
         newhash = {}
         config.each_pair { |key, val|
-          next if remove_runtime_keys and key.match(/^#MU_/)
+          next if remove_runtime_keys and (key.nil? or key.match(/^#MU_/))
           next if val.is_a?(Array) and val.empty?
           newhash[key] = self.manxify(val, remove_runtime_keys: remove_runtime_keys)
         }
         config = newhash
       elsif config.is_a?(Array)