fix prospect name

biz/models.py

@@ -93,7 +93,14 @@ class Prospect(BaseModel):
         return " - ".join(entity_names)
 
     def full_name(self):
-        return f'{self.first_name} {self.last_name}'
+        if self.first_name and self.last_name:
+            return f'{self.first_name} {self.last_name}'
+        elif self.first_name:
+            return self.first_name
+        elif self.last_name:
+            return self.last_name
+        else:
+            return 'no name'
 
     def __str__(self):
         return self.full_name()