We're trying out Arize and having the exact same issue - just curious if this was resolved for you Olle G.?
Also tried JS and it gives the same error but a bit more JS-y
{"stack":"OTLPExporterError: Internal Server Error\n at IncomingMessage.<anonymous> (<redacted>/node_modules/@opentelemetry/otlp-exporter-base/src/transport/http-transport-utils.ts:83:23)\n at IncomingMessage.emit (node:events:530:35)\n at endReadableNT (node:internal/streams/readable:1698:12)\n at process.processTicksAndRejections (node:internal/process/task_queues:90:21)","message":"Internal Server Error","code":"500","name":"OTLPExporterError","data":"\b\r\u0012*unable to validate authorization from span"}
