fixes networknt#2077 update the ModifiableContentSinkConduit to log t…

…he error when catching an IOException (networknt#2078)

handler/src/main/java/com/networknt/handler/conduit/ModifiableContentSinkConduit.java

@@ -242,6 +242,7 @@ private void executeHttp2WriteThread(XnioWorker workerThread, final PooledByteBu
 
                 next.terminateWrites();
             } catch (IOException e) {
+                LOG.error("Failed to execute conduit writes on Worker Thread.", e);
                 throw new RuntimeException("Failed to execute conduit writes on Worker Thread. " + e.getMessage(), e);
             }
         });