Weird errors with FAST_DEV

[mwskwong]

Recently, I start noticing the following error message come up quite frequently when FAST_DEV is active. Sometimes, it is because I have made some mistakes in the code and caused a runtime error. Yet, sometimes it is just there for no reason. I can work around this by cleaning the cache and restart the DEV server and/or enable and disable the FAST_DEV option.

Does anyone know what's the cause of this message?

node_modules\gatsby\src\utils\dev-ssr\render-dev-html-child.js:52
    ...position.filename.split(sysPath.sep).slice(2)
                         ^
TypeError: Cannot read properties of undefined (reading 'split')
    at parseError (node_modules\gatsby\src\utils\dev-ssr\render-dev-html-child.js:52:26)
    at node_modules\gatsby\src\utils\dev-ssr\render-dev-html-child.js:106:27
warn The path "/" errored during SSR.
Edit its component undefined to resolve the error.