Undo error #8
Description
list tasks
Here are the tasks in your list:
1. [D][✘] buy ticket (by: 23/11/2019 1900)
2. [D][✘] buy ticket (by: 23/11/2019 1100)`
undon 1
Please enter a valid command.
undo 1
com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Cannot construct instance of duchess.model.task.Deadline (no Creators, like default construct, exist): cannot deserialize from Object value (no delegate- or property-based Creator) at [Source: (String)"[ "duchess.storage.Store", { "taskList" : [ "java.util.ArrayList", [ [ "duchess.model.task.Deadline", { "description" : "buy ticket", "deadline" : "2019-11-23T19:00", "done" : false } ], [ "duchess.model.task.Deadline", { "description" : "buy ticket", "deadline" : "2019-11-23T11:00", "done" : false } ] ] ], "moduleList" : [ "java.util.ArrayList", [ ] ], "duchessCalendar" : [ "java.util.ArrayList", [ ] ] } ]"; line: 3, column: 5] (through reference chain: duchess.storage.Store["taskList"]->java.util.ArrayList[0]) at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:67) at com.fasterxml.jackson.databind.DeserializationContext.reportBadDefinition(DeserializationContext.java:1452) at com.fasterxml.jackson.databind.DeserializationContext.handleMissingInstantiator(DeserializationContext.java:1028) at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeFromObjectUsingNonDefault(BeanDeserializerBase.java:1297) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserializeFromObject(BeanDeserializer.java:326) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:159) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:116) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromObject(AsArrayTypeDeserializer.java:61) at com.fasterxml.jackson.databind.deser.AbstractDeserializer.deserializeWithType(AbstractDeserializer.java:254) at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:288) at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:245) at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserialize(CollectionDeserializer.java:27) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:116) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromArray(AsArrayTypeDeserializer.java:53) at com.fasterxml.jackson.databind.deser.std.CollectionDeserializer.deserializeWithType(CollectionDeserializer.java:314) at com.fasterxml.jackson.databind.deser.impl.MethodProperty.deserializeAndSet(MethodProperty.java:138) at com.fasterxml.jackson.databind.deser.BeanDeserializer.vanillaDeserialize(BeanDeserializer.java:288) at com.fasterxml.jackson.databind.deser.BeanDeserializer.deserialize(BeanDeserializer.java:151) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer._deserialize(AsArrayTypeDeserializer.java:116) at com.fasterxml.jackson.databind.jsontype.impl.AsArrayTypeDeserializer.deserializeTypedFromObject(AsArrayTypeDeserializer.java:61) at com.fasterxml.jackson.databind.deser.BeanDeserializerBase.deserializeWithType(BeanDeserializerBase.java:1178) at com.fasterxml.jackson.databind.deser.impl.TypeWrappedDeserializer.deserialize(TypeWrappedDeserializer.java:68) at com.fasterxml.jackson.databind.ObjectMapper._readMapAndClose(ObjectMapper.java:4014) at com.fasterxml.jackson.databind.ObjectMapper.readValue(ObjectMapper.java:3005) at duchess.storage.Storage.getLastSnapshot(Storage.java:108) at duchess.logic.commands.UndoCommand.setToPreviousStore(UndoCommand.java:65) at duchess.logic.commands.UndoCommand.execute(UndoCommand.java:58) at Duke.run(Duke.java:51) at Duke.main(Duke.java:66) Mapping was unsuccessful.