awa？ render making!

docs/configes sample/basic_config.json

@@ -14,5 +14,8 @@
     },
     "basic_force" : {
         "name": ["x", "y", "x&y format:basic_number/unit1:[m]/unit2:[]"]
+    },
+    "basic_poi": {
+        "name": ["x", "y"]
     }
 }

libs/loads.py

@@ -12,7 +12,7 @@ def config(file_name, stack=None):
         with open(file_name, "r") as jf:  # jf -> json file
             rd = json.load(jf)
     except FileNotFoundError:
-        raise
+        raise FileNotFoundError("no config file")
     if stack != None:
         rd = rd[stack]
     return rd