minor

Author: odeimaiz

services/static-webserver/client/source/class/osparc/data/model/Node.js

@@ -1351,26 +1351,28 @@ qx.Class.define("osparc.data.model.Node", {
       this.self().ListenChangesProps.forEach(key => {
         switch (key) {
           case "inputs":
-            // listen to changes in the props form
-            this.getPropsForm().addListener("changeData", () => {
-              const data = this.__getInputData();
-              this.fireDataEvent("projectDocumentChanged", {
-                "op": "replace",
-                "path": `/workbench/${nodeId}/inputs`,
-                "value": data,
-                "osparc-resource": "node",
+            if (this.hasPropsForm()) {
+              // listen to changes in the props form
+              this.getPropsForm().addListener("changeData", () => {
+                const data = this.__getInputData();
+                this.fireDataEvent("projectDocumentChanged", {
+                  "op": "replace",
+                  "path": `/workbench/${nodeId}/inputs`,
+                  "value": data,
+                  "osparc-resource": "node",
+                });
               });
-            });
-            // listen to changes in link and unlink of ports
-            this.getPropsForm().addListener("linkFieldModified", () => {
-              const data = this.__getInputData();
-              this.fireDataEvent("projectDocumentChanged", {
-                "op": "replace",
-                "path": `/workbench/${nodeId}/inputs`,
-                "value": data,
-                "osparc-resource": "node",
+              // listen to changes in link and unlink of ports
+              this.getPropsForm().addListener("linkFieldModified", () => {
+                const data = this.__getInputData();
+                this.fireDataEvent("projectDocumentChanged", {
+                  "op": "replace",
+                  "path": `/workbench/${nodeId}/inputs`,
+                  "value": data,
+                  "osparc-resource": "node",
+                });
               });
-            });
+            }
             break;
           case "inputsUnits":
             if (this.hasPropsForm()) {