Fixed import error

portal/tools/is_api_adapter.py

@@ -5,7 +5,6 @@ import is_api
 import is_api.entities
 from flask import Flask
 
-from portal.service import errors
 
 if TYPE_CHECKING:
     from portal.database import Course, Project, User
@@ -23,6 +22,7 @@ class IsApiWrapper:
             if fac_id is None and faculty_id is not None:
                 fac_id = int(faculty_id)
         except Exception as ex:
+            from portal.service import errors
             raise errors.PortalServiceError(f"Unable to extract faculty_id: {ex}")
         self._api = is_api.IsApiClient(domain=domain,
                                        faculty_id=fac_id,