8000 schema version 4 not supported: update to schema 4 compatible api · Issue #23 · hafaio/repub · GitHub
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NielsMander opened this issue Apr 17, 2025 · 5 comments
Open

schema version 4 not supported: update to schema 4 compatible api #23

NielsMander opened this issue Apr 17, 2025 · 5 comments

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@NielsMander
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Since a few days I always get an error message:
"_Conversion to epub failed.
Error: schema version 4 not supported.__"
What does this mean? I haven't changed anything. Using Windows 11, Edge or Chrome browser, newest version of the extension.
@erikbrinkman
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Without more information it's reallt hard to help. I could / probably invest iv better logging support so I can debug these issues more easily. In the meantime, I'm going to ask you to follow some steps that will make it easier for me to figure out what's going on. Unfortunately, you're on edge not chrome, but hopefully you can find similar functionality:

The instructions are all listed in #20 , essentially go to extensions, turn on developer mode, then go to the extension, toggle on collect errors.

After that, do what triggers the error (does it happen everywhere?).

Now when you go back to the extension details page, you should see an Errors button. Can you copy the more detailed error information you see there?

@NielsMander
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NielsMander commented Apr 17, 2025 •
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I followed your instructions and made a screenshot of the error message. Do you need further informations?
And yes, it happens every time.

Image

@erikbrinkman
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Oh no. This doesn't portend well, but I'm not sure what I can do at the moment.

A brief explanation: reMarkable doesn't publish their api. Originally I copied the code of someone who reverse engineered it. Then it changed, and I learned how to reverse engineer it. The very first step is getting information from a google cloud server about how it stored, and it appears that they're updating the version.

Unfortunately I don't have access to the version 4 api yet, since my account hasn't been upgraded, and I can't think of another way to test and reverse engineer it. Even after I do, it may still be a process to get a working version of the api.

For now I'll update the extension page to indicate that this might be happening and redirect to this issue. In meantime, I suggest you just download them as epubs and upload using the official apps.

I'm sorry for the inconvenience. I wish reMarkable just made this public.

@erikbrinkman erikbrinkman changed the title Error message: Conversion to epub failed. schema version 4 not supported: update to schema 4 compatible api Apr 17, 2025
@NielsMander
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Thank you for your explanation.

@erikbrinkman
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I'm sorry I don't have a better solution. At some point my access will also break, and then I'll be able to patch in support. I'll try to do that as quickly as possible, but it takes manually reverse engineering it. If you find any information about someone adapting to the recent change, feel free to attach that here, and I'll do my best to incorporate their learnings.

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