following this pattern, neither of the two endpoints work, even changing to otlpHttpExporter.

error: {"level":"error","ts":1748647763.952506,"caller":"exporterhelper/queue_sender.go:92","msg":"Exporting failed. Dropping data.","kind":"exporter","data_type":"metrics","name":"otlp","error":"not retryable error: Permanent error: rpc error: code = Unimplemented desc = unexpected HTTP status code received from server: 404 (Not Found); transport: received unexpected content-type \"text/plain; charset=utf-8\"","dropped_items":580,"stacktrace":"<http://go.opentelemetry.io/collector/exporter/exporterhelper.newQueueSender.func1|go.opentelemetry.io/collector/exporter/exporterhelper.newQueueSender.func1>\n\tgo.opentele <http://metry.io/collector/exporter@v0.109.0/exporterhelper/queue_sender.go:92|metry.io/collector/exporter@v0.109.0/exporterhelper/queue_sender.go:92>\ngo.opentelemetry.io/collector/exporter/internal/queue.(*boundedMemory Queue[...]).Consume\n\<http://tgo.opentelemetry.io/collector/exporter@v0.109.0/internal/queue/bounded_memory_queue.go:52|tgo.opentelemetry.io/collector/exporter@v0.109.0/internal/queue/bounded_memory_queue.go:52>\ngo.opentelemetry.io/collec tor/exporter/internal/queue.(*Consumers[...]).Start.func1\n\<http://tgo.opentelemetry.io/collector/exporter@v0.109.0/internal/queue/consumers.go:43%22}|tgo.opentelemetry.io/collector/exporter@v0.109.0/internal/queue/consumers.go:43"}>