Today, when I was using v0.dev, I encountered this problem when importing my own website:v0 can not detect a page to preview
When a message is sent, it will also prompt Failed to submit message. Start a new chat,
retry, or edit your message.
Uploading: image.png…
Uploading: 4281c02c-288b-4bf1-af11-271c929122b1.png…
The picture is a screenshot of my error message
I’ve tested deploying with go, react on my local side and found no issues
The project is made in React and Go languages
Ask the big guy for an answer
if v0 does not support Go, it will not show you the preview, it happens with other languages that are not yet adapted to v0 (I think)
Hey, Yuhan! Welcome to the Vercel Community 
Your images didn’t upload. If you’re still seeing issues, can you share a chat link with us or share your screenshots again?
Hi, I just came across a similar issue where v0 could not detect a page to preview. It seems that v0 is looking for a React-based page.tsx file somewhere in the folder tree. I was able to fix my issue by asking v0 to create a page.tsx file for the demo and it worked.
I should mention: my case was a bit different. I initially asked for VanillaJS in the output, and V0 did just that. It gave me an index.html and a component.js file. Apparently, v0 didn’t think to check for an “index.html” file for the demo. v0 had to add an “app/page.tsx” file to house the demo.
I hope this helps