Lost Access to Previous Project Versions – “Failed to Sync PREVIEW to SHA” Error

[nikita-9952 (Nikita Friesen)]

Dear Support Team

I am unable to restore previous versions of my project.

Whenever I try to restore a version, I receive the following error:

Failed to sync PREVIEW to SHA
Not Found – REST API endpoints for apps - GitHub Docs

Important context:

• The project was originally created directly inside v0.

• It was not connected to GitHub initially.

• I am trying to restore an earlier version from the internal version history.

After seeing similar issues discussed online, I linked the project to GitHub as a potential fix. However, even after successfully connecting GitHub and authorizing the app, the same error still occurs when attempting to restore a version.

It appears that the restore process is attempting to sync with a GitHub App installation, but something is still failing at the SHA sync step.

Could you please:

1. Restore access to the previous internal versions , or

2. Clarify why the restore action depends on GitHub synchronization in this case?

I can provide the project ID and screenshots if needed.

Thank you in advance!

[system]

Did you know there’s another category dedicated to v0 topics? A human should be here soon to help, but the answer may already be available even faster in one of these other posts.

Our docs are a great place to start.

What is v0? | v0 Docs

We also have a walkthrough to help guide your workflow.

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Getting Started Using v0 is like chatting with a frontend engineer, who takes in your design guidelines and creates an application for you. A common workflow with v0 is putting in design files and images to scaffold your application and then use text prompts to nudge v0 into creating your perfect application. Remember, just like any other AI tool, the quality of the output that v0 generates depends on the quality of the prompt or instructions you input. So, it’s important to be clear, descripti…

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https://community.vercel.com/tags/c/events/42/v0

[anshumanb (Anshuman Bhardwaj)]

Hi @nikita-9952, welcome to the Vercel Community!

I’m sorry that you’re facing this issue. Could you share here the chat id or project Id?

In the meantime, here are some potential workarounds:

• Export and reimport: If you can access any version, download it as a ZIP file and create a new v0 chat by dragging the ZIP into the chat interface
• Duplicate the chat: Try duplicating your current chat in v0 settings - this sometimes bypasses version history issues

[nikita-9952 (Nikita Friesen)]

Hi Anshuman,

I resolved this issue by using the chat to rebuild it again and it worked. Used almost all of my credits for that one. I am now facing another issue where my project is showing me a white screen and the ZIP Data is almost empty. I saved version 23 as ZIP while it was working. But now it is just blank. Here is my chat ID: https://v0.app/chat/bewaesserungsanlagen-website-nfAFf9oDxPh

Chat ID: prj_cMvB45FzwJAT0NtCwq1ugMVkzr3f

EDIT: I tried the second suggested fix, but unfortunately it didn’t help.

Thank you in Advance!