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The issue was solved by changing the

fetch: require("cross-fetch"),

line in the

setPolyfills

function to the import approach at the beginning of the file:

import { fetch } from 'cross-fetch'

oh interesting

Hey Graham! Thanks for the reply. I was not getting errors. In fact, Growthbook sent "connection successful" message, but was not connected in the SDK page. Also, I was always receiving

null

in the feature flags

I wonder if we should do a PR for this?

Not sure. It seems that the issue was only happening on deployments, because the local environment was working as expected. We needed to add the

setPolyfills

function, but also change the way to import

fetch

from

cross-fetch

package. But I was not getting a clear error message