Chrome won't download the Flutter export.

[MauScheff]

Describe the bug When I click export on Google Chrome Version 114.0.5735.198 (Official Build) (x86_64) there's a message in the download bar that says "material-theme.zip is dangerous, so Chrome blocked it (Discard)".

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: MacOS Venture 13.4.1 (22F82)
• Browser: Google Chrome Version 114.0.5735.198 (Official Build) (x86_64)
• Version: Google Chrome Version 114.0.5735.198 (Official Build) (x86_64)

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Browser [e.g. stock browser, safari]
• Version [e.g. 22]

Additional context Add any other context about the problem here.

[solshuffle]

Having the same issue, it is not possible to download the Flutter theme from https://m3.material.io/theme-builder#/custom

[dzziwny]

exporting Flutter throws error in console

[maichongju]

Same problem. Please fix

[wfahnestock]

Hi all, it seems exports are working on Chrome 120.0.6099.130. See if you have any updates for Chrome before attempting to export.

Unfortunately, exports are broken on the latest Firefox, Version 121.0. They fail with error:

Uncaught (in promise) TypeError: module$exports$google3$third_party$javascript$typings$jszip$index is not a constructor
    download https://m3.material.io/_mtb/app.js?version=1670027719620561:13291
app.js:13291:794

[jwill]

This was due to browser settings that would sometimes flag or interfere with the download library we were using.

Downloads are more consistent with our new version, please access it here instead: https://material-foundation.github.io/material-theme-builder/

[MauScheff]

Thanks! @jwill