Add output connection to group outputs node and enhance error logging in execution

Author: sebastianrath

.github/workflows/graphs/build-test-publish.act

@@ -1557,6 +1557,12 @@ nodes:
           dst:
             node: for-each-loop-v1-octopus-jellyfish-rabbit
             port: exec
+        - src:
+            node: concurrent-for-each-loop-v1-kiwano-dog-gray
+            port: exec-completed
+          dst:
+            node: group-outputs-v1-navy-durian-violet
+            port: exec-lime-banana-jackfruit
         - src:
             node: branch-v1-lime-peacock-kiwano
             port: exec-otherwise

core/executions.go

@@ -112,6 +112,7 @@ func (n *Executions) Execute(outputPort OutputId, ec *ExecutionState, err error)
 	}
 
 	if err != nil {
+		utils.LogErr.Printf("EXEC_DEBUG: node '%s' (%s) port '%s' returned error: %v\n", nodeID, nodeName, dest.Port, err)
 		return err
 	}