Cloudflare Worker: Promise will never complete

[Colleoni]

I am currently testing a PMTiles deploy using Cloudflare as the CDN following the documentation.

I have completed the guide and tested everything on maputnik using a source data layer of type: Vector (TileJSON url).
However, for zooms over level 6 I receive a 500 error. (example url: planet-20241004/6/33/22.mvt)

So, I have extracted the mvt request and called it from a browser, in which Cloudflare response with

Error 1101: Worker threw exception

In order to further investigate the problem, I have also enabled worker logs, which basically contains the message

"exceptions": [
    {
      "name": "Error",
      "message": "Promise will never complete.",
      "timestamp": 1732890215379
    }
  ],

I have tried to deploy the worker both Manually and using the wrangler script.
Initially I had the problem that I was not on the paid worker plan, but then I noticed it and I have activated it.

Do you have any suggestion? Am I missing something?

[bdon]

I just tried using a worker with the index.js linked here: https://docs.protomaps.com/deploy/cloudflare , setting the r2 BUCKET binding and an ALLOWED_ORIGINS to https://maplibre.org, then loading the TileJSON in Maputnik and zooming to 15 without issues. Is this happening intermittently for you or 100% of the time?

[Colleoni]

Thank for you help and time.
It happens 100%, only low resolution tiles are downloaded

[bdon]

Is your planet-20241004 download from maps.protomaps.com/builds or from a different source?

[Colleoni]

I did not notice it, but apparently you pointed in the right direction it is not from protomaps build.
I think it is generated with a different tool. I really did not thought about this because I am currently using the same file on a test server which uses tileserver-gl and it works. I will check with a photomaps build.
I was probably looking into the wrong direction.... Cloudflare resource etc...

[bdon]

If you can share your file that will help debug, also you can use the command pmtiles verify https://docs.protomaps.com/pmtiles/cli#verify to check the structure of the file, in case it is invalid somehow

[Colleoni]

OK, I can confirm it is definitely the file.
I have tried the verify command following your suggestion, but it simply output

Completed verify in 20.003737981s.

I will try to re-upload the data on r2 and see. Sure no problem in sharing it, it is 70gb, I only need to find how to correctly share it, probably using r2.

I think the file was generated using osmium-tool, but I will try to confirm also this.
Thank you gain for your help