The preview does not load

Try these first#

1. 1 Press Reload in the bar above the preview.
2. 2 If the preview says Waking your app, wait a few seconds. Your app sleeps when nobody uses it and wakes up when you open it.
3. 3 Press Open in a new tab to see the app on its own. If it works there, the problem is only in the preview frame.
4. 4 Check the end of the chat. If the last build failed, the app may be in a broken state. See A build stopped or failed.

The app is not responding#

This message means your app stopped running. Press Reload once. If it stays, ask Crisp in the chat: "The preview says the app is not responding. Please fix it." Crisp can read the app's error log and restart it.

The preview shows an old version#

The preview reloads by itself after each build. If you still see an old version, press Reload. If you edited a file in the Code tab, check that you saved it.

A page shows an error#

Copy the error message, note the page in the path bar, and send both to Crisp. See Write good prompts.

Sign-in in your app does not work in the preview#

Some browsers block sign-in inside a frame. Press Open in a new tab and sign in there.

The preview is blank in the frame but works in a new tab#

Your preview is private, and the frame opens it with a short sign-in that your browser keeps for the app's address. A browser that blocks this for every site shown in a frame shows a blank or a refused page there. Press Open in a new tab: the preview works in its own tab. To let the frame work, allow cookies for the app in your browser's settings.