fix(inferium-server): crash with shallowClone when a config does not exist

inferium-server.lua

@@ -3,7 +3,7 @@ local utils = require('libs/utils')
 local inferium = require('config/inferium')
 
 local DEFAULT_HARVESTER_NAME = 'harvester'
-local VERSION = "2.0.2"
+local VERSION = "2.0.3"
 local INFERIUM_SERVER = 'inferium.com'
 
 local PERSISTED_CONFIGS = '/data/inferium-configs'
@@ -52,8 +52,11 @@ local function saveConfigForComputer(computerId, config)
 end
 
 -- Utils
-
 local function getConfigWithLength(config)
+  if not config then
+    return config
+  end
+
   local configWithLength = utils.shallowClone(config)
   configWithLength.length = utils.sizeof(config.plan)
 

libs/utils.lua

@@ -41,10 +41,15 @@ utils.shallowDiff = function(a, b)
 end
 
 utils.shallowClone = function(t)
+  if not t then
+    return t
+  end
+
   local res = {}
   for k,v in pairs(t) do
     res[k] = v
   end
+
   return res
 end