Parcel: Cannot set property 'fileName' of undefined

[FDiskas]

Cannot set property 'fileName' of undefined
Console logs:

Server running at http://localhost:37557 - configured port 1234 could not be used.
⠙ Building landing.html...addDependencyTo is deprecated in favor of
result.messages.dependency; posthtml-loader >= v1.0.1 will
automatically add your imported files to webpack's file watcher.
addDependencyTo is deprecated in favor of
result.messages.dependency; posthtml-loader >= v1.0.1 will
automatically add your imported files to webpack's file watcher.
🚨  /src/pages/landing.html: Cannot set property 'fileName' of undefined
    at Pipeline.process (/node_modules/parcel-bundler/src/Pipeline.js:30:22)
addDependencyTo is deprecated in favor of
result.messages.dependency; posthtml-loader >= v1.0.1 will
automatically add your imported files to webpack's file watcher.
addDependencyTo is deprecated in favor of
result.messages.dependency; posthtml-loader >= v1.0.1 will
automatically add your imported files to webpack's file watcher.

1559749197535.zip

[w-biggs]

This is happening for me whenever there's _any_ error in the pipeline, such as a posthtml error; Parcel tries to report the error, but there's an error in the error reporting function itself.

https://github.com/parcel-bundler/parcel/blob/96119be782d9d551f73b77e06ab25067c7073344/packages/core/parcel-bundler/src/Pipeline.js#L30

This is making debugging issues a major pain; I'm having to manually add console.error(err) before the erroring line in Pipeline.js order to get a sense of what the error _actually_ is.

[samuelgozi]

I have this issue too.
@w-biggs thanks for the tip, it helped me find out what the underlying issue is.

[namse]

In my case, I set wrong file name in index.html.

[FDiskas]

bot added the Stale label

[KilianKilmister]

also very much interested in this

[github-actions[bot]]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed in 14 days if no further activity occurs.