Failed to fetch dynamically imported module flow-condition-types.v1.hash.js

[vmohir]

Dynamic import fails when flow-condition-types.v1.{hash}.js hash changes

Problem

I'm encountering a Failed to fetch dynamically imported module flow-condition-types.v1.{hash}.js error when the userflow.js library attempts to dynamically import internal modules. This happens when the hash in the filename changes between when the main script was loaded and when the dynamic import is executed.

We receive this error more than 50 times every day. I'm surprised that the hash is changing so frequently.

Error message

Failed to fetch dynamically imported module: https://js.userflow.com/es2020/ui.v1.{hash}.js

Expected Behaviour

Dynamic imports of internal modules should work reliably, even when file hashes change due to updates or deployments.

Current Behaviour

The dynamic import fails because it's trying to fetch a file with an old hash that no longer exists on the server.

[ananthakumaran]

@vmohir could you share the full error message? We don't delete old assets, so this shouldn't happen unless there is a network error. If you could share the full path (or error message), we could check more.

[vmohir]

@ananthakumaran
The full error message is like this:

TypeError: Failed to fetch dynamically imported module: https://js.userflow.com/es2020/ui.v1.CgFDqHEf.js
// or
TypeError: Failed to fetch dynamically imported module: https://js.userflow.com/es2020/flow-condition-types.v1.ByaBzkSZ.js

[ananthakumaran]

@vmohir could you reach our customer support https://www.userflow.com/contact to take this forward. We use this issue tracker mostly to track issues related to userflow.js package.

The dynamic import fails because it's trying to fetch a file with an old hash that no longer exists on the server.

We don't delete old assets, and I don't think that's the issue here since the URLs you have shared are all live and not removed.

We receive this error more than 50 times every day

We definitely don't change the URLs this frequently. https://vite.dev/guide/troubleshooting.html#failed-to-fetch-dynamically-imported-module-error I suspect it might be a network issue, since we don't delete old assets.