Exited from signal: SIGBUS

Hello, I started customizing Rocket.Chat and followed the documentation at the link below.
Now, when I try to access the address http://localhost:3000/, the following error appears:

Your app is crashing. Here's the latest log:
Started MongoDB.
Linted your app. No linting errors.
strict mode: use allowUnionTypes to allow union type keyword at "#/properties/count" (strictTypes)
strict mode: use allowUnionTypes to allow union type keyword at "#/properties/offset" (strictTypes)
strict mode: missing type "object" for keyword "additionalProperties" at "#" (strictTypes)
strict mode: missing type "object" for keyword "properties" at "#" (strictTypes)
strict mode: missing type "object" for keyword "required" at "#/oneOf/0" (strictTypes)
strict mode: missing type "object" for keyword "required" at "#/oneOf/1" (strictTypes)
Exited from signal: SIGBUS
Your application is crashing. Waiting for file change.

My operating system is Ubuntu.

Reproduce the crash by opening http://localhost:3000/ on Ubuntu and capture the latest log, including the MongoDB startup and SIGBUS lines. Compare the setup used with the referenced documentation and identify the cause; done means the customized application starts without exiting from SIGBUS.

Written by the indexing model from the issue text.