I am creating a js file that inherits from spreadsheet/static/src/o_spreadsheet/o_spreadsheet.js. I am trying to override the onMessageReceived(message) function of the "Session" class in that file. But I am getting the error as shown.

Here is my code:

import { patch } from "@web/core/utils/patch";
import { Session } from "@spreadsheet/o_spreadsheet/o_spreadsheet";

console.log("Loading file successfull")
patch(Session.prototype, {
    onMessageReceived(message) {
        console.log("Successfully")
        this._super(message);
        if (message.type === "REQUIRE_RELOAD") {
            window.location.reload();
        }
    },
});

file __manifest__.py:

'assets': {
        'web.assets_backend': [
            'spreadsheet_edition_extend/static/src/o_spreadsheet/o_spreadsheet.js',
        ],
    },