Continued to get this error with OH 4.3.7 when starting up with the Sonos Binding after upgrading from OH 4.3.5. My guess it has code in there for OH 5.x version.
Had to uninstall Sonos binding and manually drop in Sonos 4.3.6 version and it worked fine.
## 2025-08-25 07:08:23.923 \[WARN \] \[core.config.core.xml.osgi.XmlDocumentBundleTracker\] - The XML document ‘/OH-INF/thing/ArcUltra.xml’ in module ‘org.openhab.binding.sonos’ could not be parsed:
---- Debugging information ----
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : semantic-equipment-tag
class : java.util.ArrayList
required-type : java.util.ArrayList
converter-type : com.thoughtworks.xstream.converters.collections.CollectionConverter
path : /thing-descriptions/thing-type/semantic-equipment-tag
line number : 11
class\[1\] : org.openhab.core.thing.xml.internal.ThingTypeXmlResult
required-type\[1\] : org.openhab.core.thing.xml.internal.ThingTypeXmlResult
converter-type\[1\] : org.openhab.core.thing.xml.internal.ThingTypeConverter
class\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionList
required-type\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionList
converter-type\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionConverter
version : 1.4.21
## com.thoughtworks.xstream.converters.ConversionException:
---- Debugging information ----
cause-exception : com.thoughtworks.xstream.mapper.CannotResolveClassException
cause-message : semantic-equipment-tag
class : java.util.ArrayList
required-type : java.util.ArrayList
converter-type : com.thoughtworks.xstream.converters.collections.CollectionConverter
path : /thing-descriptions/thing-type/semantic-equipment-tag
line number : 11
class\[1\] : org.openhab.core.thing.xml.internal.ThingTypeXmlResult
required-type\[1\] : org.openhab.core.thing.xml.internal.ThingTypeXmlResult
converter-type\[1\] : org.openhab.core.thing.xml.internal.ThingTypeConverter
class\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionList
required-type\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionList
converter-type\[2\] : org.openhab.core.thing.xml.internal.ThingDescriptionConverter
version : 1.4.21
org.openhab.binding.sonos-4.3.6-20250426.154644-1.jar.txt (135.4 KB)
Best, Jay