# Error Saving Container - Vision 8.1

**URL:** <https://forum.inductiveautomation.com/t/error-saving-container-vision-8-1/73789>\
**Category:** Ignition\
**Tags:** ignition81, vision\
**Created:** [May 16, 2023, 2:36pm UTC](https://forum.inductiveautomation.com/t/error-saving-container-vision-8-1/73789 "2023-05-16T14:36:00Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![AIO](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aio/32/87549_2.png) [@AIO](https://forum.inductiveautomation.com/u/AIO)\
**Post date:** [May 16, 2023, 2:36pm UTC](https://forum.inductiveautomation.com/t/error-saving-container-vision-8-1/73789/1 "2023-05-16T14:36:00Z")

</div>

Hey folks,

Getting this error saving a window, having no luck deciphering the issue. Anyone offer advice on what the error is / how to resolve it? Much appreciated

```auto
com.inductiveautomation.ignition.common.xmlserialization.SerializationException: Error during serialization for property 'interactionController' on object '[FPMIWindow]CommentEntry'
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:307)
	at com.inductiveautomation.factorypmi.designer.xmlserialization.WindowDelegate.serialize(WindowDelegate.java:34)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializer.serialize(XMLSerializer.java:525)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializer.serializeBinary(XMLSerializer.java:507)
	at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace.saveContainer(WindowWorkspace.java:1823)
	at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace.onClose(WindowWorkspace.java:805)
	at com.inductiveautomation.ignition.designer.designable.AbstractDesignableWorkspace.close(AbstractDesignableWorkspace.java:464)
	at com.inductiveautomation.factorypmi.designer.workspace.WindowWorkspace.close(WindowWorkspace.java:2231)
	at com.inductiveautomation.ignition.designer.designable.AbstractDesignableWorkspace$1.actionPerformed(AbstractDesignableWorkspace.java:112)
	at com.jidesoft.plaf.basic.BasicJideTabbedPaneUI$CloseTabAction.actionPerformed(Unknown Source)
	at java.desktop/javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
	at java.desktop/javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
	at java.desktop/javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
	at java.desktop/javax.swing.DefaultButtonModel.setPressed(Unknown Source)
	at java.desktop/javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.desktop/java.awt.AWTEventMulticaster.mouseReleased(Unknown Source)
	at java.desktop/java.awt.Component.processMouseEvent(Unknown Source)
	at java.desktop/javax.swing.JComponent.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.Component.processEvent(Unknown Source)
	at java.desktop/java.awt.Container.processEvent(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.desktop/java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.Component.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$4.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.desktop/java.awt.EventQueue$5.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.desktop/java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.desktop/java.awt.EventDispatchThread.run(Unknown Source)
Caused by: com.inductiveautomation.ignition.common.xmlserialization.SerializationException: Error during serialization for property 'generalAdapters' on object '[DefaultInteractionController]com.inductiveautomation.factorypmi.application.binding.DefaultInteractionController@25de4156'
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:307)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serialize(DefaultObjectSerializationDelegate.java:334)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:227)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.doProperty(DefaultObjectSerializationDelegate.java:284)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:305)
	... 47 more
Caused by: com.inductiveautomation.ignition.common.xmlserialization.SerializationException: Error during serialization for property 'value' on object '[DynamicPropertyDescriptor]commentLookup'
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:307)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serialize(DefaultObjectSerializationDelegate.java:334)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:227)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.delegates.MapDelegate.serializeElements(MapDelegate.java:43)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.delegates.TreeMapDelegate.serialize(TreeMapDelegate.java:25)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.factorypmi.designer.xmlserialization.BasicContainerDelegate.serializeProperties(BasicContainerDelegate.java:60)
	at com.inductiveautomation.factorypmi.designer.xmlserialization.BasicContainerDelegate.serialize(BasicContainerDelegate.java:45)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:227)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.delegates.MapDelegate.serializeElements(MapDelegate.java:43)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.delegates.MapDelegate.serialize(MapDelegate.java:33)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:227)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.doProperty(DefaultObjectSerializationDelegate.java:284)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:305)
	... 53 more
Caused by: TypeError: unhashable type: 'list'

	at org.python.core.Py.TypeError(Py.java:236)
	at org.python.core.PyList.list ___hash__ (PyList.java:1017)
	at org.python.core.PyList.hashCode(PyList.java:1012)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.safeHashCode(DefaultObjectSerializationDelegate.java:148)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.safeArrayHashCode(DefaultObjectSerializationDelegate.java:163)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.safeHashCode(DefaultObjectSerializationDelegate.java:144)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.safeArrayHashCode(DefaultObjectSerializationDelegate.java:163)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.safeHashCode(DefaultObjectSerializationDelegate.java:144)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.ReferenceTracker$Key.hashCode(ReferenceTracker.java:80)
	at java.base/java.util.HashMap.hash(Unknown Source)
	at java.base/java.util.HashMap.get(Unknown Source)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.ReferenceTracker.track(ReferenceTracker.java:32)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:46)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeConstructor(DefaultObjectSerializationDelegate.java:381)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeConstructor(DefaultObjectSerializationDelegate.java:372)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serialize(DefaultObjectSerializationDelegate.java:330)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.XMLSerializationContext.serialize(XMLSerializationContext.java:49)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:240)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.writeCall(DefaultObjectSerializationDelegate.java:227)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.doProperty(DefaultObjectSerializationDelegate.java:284)
	at com.inductiveautomation.ignition.common.xmlserialization.serialization.DefaultObjectSerializationDelegate.serializeProperties(DefaultObjectSerializationDelegate.java:305)
	... 73 more

Ignition v8.1.24 (b2023011208)
Java: Azul Systems, Inc. 11.0.16.1

```

---

<div class="post-metadata">

**Author:** ![zacht](https://avatars.discourse-cdn.com/v4/letter/z/ea5d25/32.png) [@zacht](https://forum.inductiveautomation.com/u/zacht)\
**Post date:** [May 16, 2023, 2:39pm UTC](https://forum.inductiveautomation.com/t/error-saving-container-vision-8-1/73789/2 "2023-05-16T14:39:50Z")

</div>

It looks like you supplied a python object (list) as the value to a component property. IIRC, values of properties must be valid Java types.

Do you have a component or custom property on some component called "commentLookup"?

---

<div class="post-metadata">

**Author:** ![AIO](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/aio/32/87549_2.png) [@AIO](https://forum.inductiveautomation.com/u/AIO)\
**Post date:** [May 16, 2023, 2:42pm UTC](https://forum.inductiveautomation.com/t/error-saving-container-vision-8-1/73789/3 "2023-05-16T14:42:02Z")

</div>

Ah, nailed it - bonehead moment. Wrote the body of the dataset (list) to the dataset binding instead of the dataset. 🤦‍♂️