convert int to str for phone

src/pojo/contact_pojo.py

@@ -16,7 +16,7 @@ class ContactPojo:
     def __init__(self, phone_number: str, passport_number: str, last_name: str, first_name: str, mail: str,
                  ccid: str = "",
                  position: int = 0):
-        self.phone = phone_number.replace(".0", "")
+        self.phone = str(phone_number).replace(".0", "")
         self.passport = passport_number
         self.last_name = last_name
         self.first_name = first_name