fix if statement

Author: tobiascadee

tap_exact/client.py

@@ -105,7 +105,7 @@ def get_url_params(self, context: dict | None, next_page_token: str) -> dict[str
         if self.select:
             params["$select"] = self.select
         start_date = self.get_starting_timestamp(context)
-        if start_date:
+        if start_date != None:
             date_filter = f"Modified gt datetime'{start_date.strftime('%Y-%m-%dT%H:%M:%S')}'"
             params["$filter"] = date_filter
         if next_page_token: