Hi,
due to the last modifications in NodeJs version 15 (https://nodejs.org/en/blog/release/v15.0.0/#throw-on-unhandled-rejections-33021, nodejs/node#33021) now the default mode for unhandledRejection is changed to throw (from warn).

This sometimes causes some unexpected crash of Node-Red.

A temporary fix could be set an option to --unhandled-rejections=warn or use a version of NodeJs before 15.