diff --git a/open-sse/handlers/chatCore.js b/open-sse/handlers/chatCore.js
index d21db965..bca3b7c5 100644
--- a/open-sse/handlers/chatCore.js
+++ b/open-sse/handlers/chatCore.js
@@ -422,7 +422,7 @@ export async function handleChatCore({ body, modelInfo, credentials, log, onCred
     }
     const errMsg = formatProviderError(error, provider, model, HTTP_STATUS.BAD_GATEWAY);
     if (log?.errorLine) {
-      log.errorLine(reqTag, "✗", `ERROR 502 · ${provider}/${model} · ${Date.now() - requestStartTime}ms\n    ${errMsg}${error.stack ? `\n    ${error.stack}` : ""}`);
+      log.errorLine(reqTag, "✗", `ERROR 502 · ${provider}/${model} · ${Date.now() - requestStartTime}ms\n    ${errMsg}`);
     }
     return createErrorResult(HTTP_STATUS.BAD_GATEWAY, errMsg, error?.resetsAtMs || undefined);
   }
diff --git a/open-sse/utils/streamHandler.js b/open-sse/utils/streamHandler.js
index 8e818a3d..e76dce90 100644
--- a/open-sse/utils/streamHandler.js
+++ b/open-sse/utils/streamHandler.js
@@ -78,7 +78,7 @@ export function createStreamController({ onDisconnect, onError, log, provider, m
         return;
       }
 
-      logStream("✗", `ERROR: ${error.message}${error.stack ? `\n    ${error.stack}` : ""}`, true);
+      logStream("✗", `ERROR: ${error.message}`, true);
       onError?.(error);
     },