@joshuef @anon78698497 it’s possible that the 408 is a RED HERRING, I took a look at the yew source code, in their fetch.rs file, here is the fetch implementation: https://github.com/yewstack/yew/blob/master/src/services/fetch.rs#L377
If you take a look on line 397 and onwards in the catch block, you’ll see that the default error catch for the fetch function throws a 408 Request Timeout.
@anon78698497 I would suggest modifying the fetch.rs source code to give more information about the e variable exposed in the catch block, that might give Josh more to work with.