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Nomad web UI currently fails when querying client nodes for allocation state end endpoints, due to CORS policy. The issue is that CORS requests that are marked `withCredentials` need the http server to include a `Access-Control-Allow-Credentials` [1]. But Nomad Task Logs and filesystem requests include authenticating information and thus marked with `credentials=true`[2][3]. It's worth noting that the browser currently sends credentials and authentication token to servers anyway; it's just that the response is not made available to caller nomad ui javascript. For task logs specifically, nomad ui retries again by querying the web ui address (typically pointing to a nomad server) which will forward the request to the nomad client agent appropriately. [1] https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Access-Control-Allow-Credentials [2]101d0373ee/ui/app/components/task-log.js (L50)[3]101d0373ee/ui/app/services/token.js (L25-L39)