From 40064be81d1fa997d2a719cd451d40acc2fc09cb Mon Sep 17 00:00:00 2001
From: Natalia Serrano <natalia.serrano@qindel.com>
Date: Fri, 8 Aug 2025 13:11:41 +0200
Subject: [PATCH] refs #2616 handle nested exceptions

---
 src/opengnsys/httpserver.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/opengnsys/httpserver.py b/src/opengnsys/httpserver.py
index 695ab9d..391cc94 100644
--- a/src/opengnsys/httpserver.py
+++ b/src/opengnsys/httpserver.py
@@ -105,6 +105,7 @@ class HTTPServerHandler(BaseHTTPRequestHandler):
                 self.sendJsonError(500, exceptionToMessage(e))
             else:
                 arg0 = e.args[0]
+                while isinstance (arg0, Exception): arg0 = arg0.args[0]      ## handle nested exceptions
                 if type (arg0) is str:
                     logger.debug ('Message processor for "{}" returned exception string "{}"'.format(path[0], str(e)))
                     self.sendJsonError (500, exceptionToMessage(e))