getting error while authenticating the bot

/node_modules/@mtkruto/node/script/storage/0_storage.js:97
            await this.set(key, (0, _1_utilities_js_1.rleEncode)(value[_2_tl_js_1.serialize]()));
                                                                                            ^

TypeError: value[_2_tl_js_1.serialize] is not a function