Erpnext show is updating while node-js update

I Team i have install frappe in our cloud server i want when i update my npm and noed to leatest its not working fine. after updating bench also and do migration it show

Check common_site_config.json and site_config.json if maintenance_mode is left on.

Updating node shouldn’t have triggered any of this, do you remember doing anything else like migrate or running a patch?

I have installed ERP version 14 but in normal installation HRMS version 15-dev is installed. is this conflict?