mlgl error, raster error

[asukachiharu]

• tileserver-gl v4.11.1
• CentOS 7

The source J exists in the data, and the copied tilejson is like: http://localhost:10000/data/J.json.
However, the console outputs an error, so when rendering raster, it shows a 500 error on the console. The docker logs show [ParseError: The document is empty. at offset 0].

mlgl: {
  class: 'Style',
  severity: 'ERROR',
  text: 'Failed to load source J: The document is empty. at offset 0'
}

[MaRaSu]

@asukachiharu I ran into this same error when my style had a sprite URL that did not exist (I had screwed up migration to new sprite URL and removed old one before all my map styles had been updated). Your problem might be the same, might be different, but the point is that sometimes the error messages from the server can be somewhat cryptic and you should perhaps investigate multiple reasons for the problem.