Thanks a lot for your help! @rp - saved me a lot of headscratching and frustration!

I had to disable

autoAddCredentials

when initializing the Session recipe on the frontend because it was causing conflicts with other libraries making requests. How do I then add the credentials back in when I make a request to my server @User?

Are you using axios or fetch?

fetch

then when you do the fetch call, you can add credentials manually for each call

for example

fetch('https://example.com', { credentials: 'include' })

hmm ok

Still fails with

credentials: include

The the error is probably something else. Nothing to do with credentials

What’s the error you are having with autoAddCredntials switched on?

This is the error I'm getting when submitting to my server

This is to do with CORS

what’s ur cors setting on the backend?

As in how are you using the cors middleware in your node API?

And I have the origin set to both of my domains

I'm getting a CORS error with making a request to mapbox

when you make a post call to /upload, does the browser also send an OPTIONS call to that same path before?

im not familiar with mapbox

Yes

whats the response from that? Can you show me the response status code and response headers?

From the OPTIONS call?

yes

that's really odd... the headers seem fine

Can i see the POST request's response headers?

yea this also needs to have the access-control-allow-origin header, which is missing..

not sure why though

Hmmm

is the cors middleware not being applied properly to all API requests?

you should apply the cors middleward first. Then any other..

make sure you are doing that.