neo4j.exceptions.CypherTypeError: {code: Neo.ClientError.Statement.TypeError} {message: Collections containing null values can not be stored in properties.}

• File "/usr/lib/python3.11/site-packages/flask/app.py", line 2213, in __call__

      def __call__(self, environ: dict, start_response: t.Callable) -> t.Any:

          """The WSGI server calls the Flask application object as the

          WSGI application. This calls :meth:`wsgi_app`, which can be

          wrapped to apply middleware.

          """

          return self.wsgi_app(environ, start_response)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

• File "/usr/lib/python3.11/site-packages/flask/app.py", line 2193, in wsgi_app

              try:

                  ctx.push()

                  response = self.full_dispatch_request()

              except Exception as e:

                  error = e

                  response = self.handle_exception(e)
                             ^^^^^^^^^^^^^^^^^^^^^^^^

              except:  # noqa: B001

                  error = sys.exc_info()[1]

                  raise

              return response(environ, start_response)

          finally:

• File "/usr/lib/python3.11/site-packages/flask/app.py", line 2190, in wsgi_app

          ctx = self.request_context(environ)

          error: BaseException | None = None

          try:

              try:

                  ctx.push()

                  response = self.full_dispatch_request()
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^

              except Exception as e:

                  error = e

                  response = self.handle_exception(e)

              except:  # noqa: B001

                  error = sys.exc_info()[1]

• File "/usr/lib/python3.11/site-packages/flask/app.py", line 1486, in full_dispatch_request

              request_started.send(self, _async_wrapper=self.ensure_sync)

              rv = self.preprocess_request()

              if rv is None:

                  rv = self.dispatch_request()

          except Exception as e:

              rv = self.handle_user_exception(e)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

          return self.finalize_request(rv)

      def finalize_request(

          self,

          rv: ft.ResponseReturnValue | HTTPException,