we have no stacktraces in wxwidgets
--- a/sip/cpp/sip_corewxAppTraits.cpp
+++ b/sip/cpp/sip_corewxAppTraits.cpp
@@ -471,7 +471,7 @@
             PyErr_Clear();
 
             Py_BEGIN_ALLOW_THREADS
-            sipRes = new  ::wxString((sipSelfWasArg ? sipCpp-> ::wxAppTraits::GetAssertStackTrace() : sipCpp->GetAssertStackTrace()));
+            sipRes = new  ::wxString("");
             Py_END_ALLOW_THREADS
 
             if (PyErr_Occurred())