fix: default value

Author: williamfzc

object.py

@@ -24,8 +24,8 @@ class MetricsResponse(BaseModel):
 
 class StatGlobal(BaseModel):
     unitLevel: str
-    unitMapping: typing.Dict[str, int]
-    impactUnits: typing.List[int]
-    transImpactUnits: typing.List[int]
-    entries: typing.List[int]
-    impactEntries: typing.List[int]
+    unitMapping: typing.Dict[str, int] = dict()
+    impactUnits: typing.List[int] = []
+    transImpactUnits: typing.List[int] = []
+    entries: typing.List[int] = []
+    impactEntries: typing.List[int] = []