Fixed missing parameter bug

src/main.py

@@ -41,7 +41,7 @@ class CloudflairAPI:
 	def get_missing_config_var(self):
 		keys = ("domain_name", "cf_api_key", "cf_zone_id", "cf_record_id")
 		missing_parameter = next(
-				(key for key in keys if getattr(self, key) is None),
+				(key for key in keys if not getattr(self, key)),
 				None
 				)
 		return missing_parameter
@@ -225,8 +225,4 @@ def main():
 # 0 - Success
 # 1 - An error occurred
 if __name__ == "__main__":
-	try:
-		sys.exit(main())
-	except Exception as e:
-		print("Exception!!", e)
-		sys.exit(1)
+	sys.exit(main())