Hidden metadata fails with 500 Internal Server Error

[nalonsoxcode]

Hey guys! Just updating here. There is an issue with the hidden metadata file structure. It basically fails with this error when you poll the metadata of an unminted NFT:

{"type":"https:\/\/tools.ietf.org\/html\/rfc2616#section-10","title":"An error occurred","status":500,"detail":"Internal Server Error"}

For minted ones it works great!! I followed all the video instructions as well. The folder in the space for hidden metadata is called "hidden" and inside there are the hidden.json and hidden.png files.

I also pulled these logs. You can see a "Syntax Error".

[metadata-provider] [2022-02-13 05:48:56] {"message":"Uncaught PHP Exception Nette\Utils\JsonException: \"Syntax error\" at /workspace/vendor/nette/utils/src/Utils/Json.php line 58","context":{"exception":{"class":"Nette\Utils\JsonException","message":"Syntax error","code":4,"file":"/workspace/vendor/nette/utils/src/Utils/Json.php:58"}},"level":500,"level_name":"CRITICAL","channel":"request","datetime":"2022-02-13T05:48:56.011170+00:00","extra":{}}

[liarco]

Hi @nalonsoxcode, thank you for the useful information.

The PHP exception is about a "Syntax error" raised by the Nette JSON library. This means that you may have an error in your JSON syntax.

Here is a common error that many users face with hidden metadata, the following is an example hidden.json file:

{
  "name": "HVS ?",
  "description": "A simple metaverse house made for a HashLips tutorial.",
  "image": "ipfs://QmVKcPMxD4rKpR6pQngUaTtPPwC9Ai8NyoXiAxtXhW3eTD",
  "compiler": "HashLips Art Engine"
}

Many users remove the compiler property but forget to remove the trailing comma:

{
  "name": "HVS ?",
  "description": "A simple metaverse house made for a HashLips tutorial.",
  "image": "ipfs://QmVKcPMxD4rKpR6pQngUaTtPPwC9Ai8NyoXiAxtXhW3eTD",
}

The code above is not valid JSON. Your error may be something else, but I suggest you to paste your hidden.json code into a JSON editor like https://jsoneditoronline.org/ and check if there are any errors.

Let me know if this helps fixing the errors.

[nalonsoxcode]

Amazing Marco you are absolutely 100% on point! Just that little , :) removed and worked perfectly fine! Thanks for your amazing support to the community. You guys got some ETH coming your way!

[liarco]

Thank you very much, I'm happy to hear it worked. 😉

Good luck with your project!