fix: fixed embeds causing errors if init failed

pyzipline/models.py

@@ -303,10 +303,10 @@ class User:
         """
         def __init__(
                 self,
-                color: str,
-                title: str,
-                siteName: str,
-                description: str,
+                color: str = None,
+                title: str = None,
+                siteName: str = None,
+                description: str = None,
                 **kwargs
         ):
             self.color = color