Error on Data grid in ver.9.1.1

An error occurred in 9.1.1 that did not occur in version 9.0.5. Attempting to display the name of last updater in the list of “Data grid” resulted in an error. The value are referenced as follows:   The specific errors that occurred are as follows. Is this a problem with the latest version? com.mendix.core.CoreRuntimeException: Exception occurred in action '{"xpath":"//MyFirstModule.progress","amount":20,"offset":0,"returnsCount":true,"sort":[],"type":"RetrieveXPathSchemaRawAction"}', all database changes executed by this action were rolled back     at com.mendix.basis.actionmanagement.CoreActionHandlerImpl.processErrorState(CoreActionHandlerImpl.scala:150) Caused by: com.mendix.connectionbus.ConnectionBusRuntimeException: An exception has occurred for the following request(s):      InternalLimitedXPathTextGetRequest (depth = -1, amount = 20): //MyFirstModule.progress     at com.mendix.connectionbus.RequestAnalyzer.doRequest( Caused by: java.lang.ClassCastException: class cannot be cast to class java.lang.Number ( is in unnamed module of loader com.mendix.container.deployment.internal.Interpreters$ClassLoaders$$anon$1 @573906eb; java.lang.Number is in module java.base of loader 'bootstrap')
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