Failed to construct 'URL': Invalid URL

[ZX828]

Subject: Import Failure: "Failed to construct 'URL'" Error with Valid Exported JSON​​

​​Description:​​

I am encountering an import error when trying to re-import a JSON file that was previously exported from DrawDB.

​​Error Message:​​

Uncaught (in promise) TypeError: Failed to construct 'URL': Invalid URL at Object.resolveUrl2 [as resolveUrl] (jsonschema.js?v=852b6613:324:39) at Validator2.validate (jsonschema.js?v=852b6613:1138:26) at jsonDiagramIsValid (validateSchema.js:5:26) at loadJsonData (ImportDiagram.jsx:54:12) at reader.onload (ImportDiagram.jsx:173:49) ​​Problem Details:​​

The JSON file was originally exported from DrawDB and has not been manually modified.

The file validates as correct JSON syntax through external validators (JSONLint).

​​Crucially, the JSON file contains no explicit URL fields​​ (e.g., no url, host, ip, or linkfields), which makes the error puzzling.

The error occurs during the JSON Schema validation step (jsonschema.js), suggesting an internal validation rule may be incorrectly applied to a non-URL data field.

​​Steps to Reproduce:​​

Export a diagram to JSON from DrawDB.

Attempt to re-import the same JSON file.

The import fails with the above error.

​​Request:​​

Could you please investigate why the JSON Schema validator is attempting to parse a non-URL field as a URL? This appears to be a bug where a validation rule for "format": "uri"is being triggered by standard data.

Thank you for your assistance.

[1ilit]

can u please share an example where the issue occurs

[ZX828]

1.Create a new MySQL table relationship

2.Export as a JSON file

3.Create New and Import the newly created JSON file

[MeetD99]

Can I work on this issue

[ZX828]

Thanks for your interest! I'm just the one who raised the issue, so I'll let the maintainers decide. @1ilit

[1ilit]

@MeetD99 sure

[MeetD99]

@ZX828 the import seems to work correctly for me, has this already been fixed? @1ilit

[1ilit]

haven't fixed it and cant reproduce it either. can you attach the json youre trying to import

[ZX828]

https://www.drawdb.app/editor I created a new table relationship on the page https://www.drawdb.app/editor and then exported a .json file. Then, I opened a new page and tried to import the .json file I just exported, but the import button was unavailable.

[MeetD99]

Still works perfectly for me, can you share a sreen recorded video, please? @ZX828

[ZX828]

https://github.com/user-attachments/assets/d3b46319-17b1-409f-9aea-b57739afd20d

[ZX828]

@MeetD99

[7vignesh]

Hi @1ilit @MeetD99, I'd like to help investigate this issue. I can see it's been challenging to reproduce. I have some ideas about the JSON schema validation that might help. Would it be okay if I take a look at the code and share my findings?

[1ilit]

@7vignesh yeah please go ahead

[7vignesh]

Hi @1ilit,

Sorry for the confusion - I created some orphaned commits (328cebc, 7ef42eb, fe7fbbd) while testing issue #561. Could you clean them up when you get a chance?

[khushthecoder]

Hi @1ilit, I’ve already fixed this issue locally — could you please assign it to me so I can open the PR?