204 No Content Error state

Tracking this issue reported by @kemmis 204 + body content makes postman throw "HTTP/2 Protocol Error:Stream closed with and error." Here are additional details: GET from Postman w/ HTTP version set to AUTO or HTTP/2: - Error in postman console: Error: Stream closed with error code NGHTTP2_HTTP_1_1_REQUIRED - No response data/headers shown at all GET from Postman w/ HTTP version set to HTTP/1.x: - Error in postman console: Error: Parse Error: Expected HTTP/, RTSP/ or ICE/ - No response data/header shown at all CURL details of response after it downgrades to HTTP/1.1: ``` * Request completely sent off < HTTP/1.1 204 No Content < Cache-Control: no-cache,no-store < Pragma: no-cache < Content-Length: 253 < Content-Type: application/json; charset=utf-8 < Expires: -1 < ServerMetrics: {"BlockReads":0,"BlockWrites":0,"BlocksAllocated":0,"DBTime":0,"DatabaseCPUTime":3,"ECFNetworkTime":0,"ECFRequestCount":0,"ECFRequestTime":0,"GREF":152,"JournalEntries":0,"LockWait":0,"LocksFailed":0,"LocksGranted":0,"MCommands":2498,"MemoryDifference":0,"NetworkCacheMisses":0,"NetworkUpdates":0,"WorkflowEventBlockReads":0,"WorkflowEventDBTime":0,"WorkflowEventECFNetworkTime":0,"WorkflowEventECFRequestCount":0,"WorkflowEventGREF":152} < Strict-Transport-Security: max-age=31536000; includeSubDomains < SERVER: WebServer < Date: Tue, 02 Jun 2026 14:01:49 GMT < * Excess found writing body: excess = 253, size = 0, maxdownload = 0, bytecount = 0 * shutting down connection #1 ``` _Originally posted by @kemmis in https://github.com/postmanlabs/postman-app-support/issues/2418#issuecomment-4603600042_