JSON parse error: Cannot deserialize value of type java.time.LocalDateTime

This error occurs when trying to parse a JSON string that contains a value for a LocalDateTime object, but the parsing library is unable to convert it into a LocalDateTime object.

To resolve this error, you can try using a JSON parsing library that supports LocalDateTime objects, such as Jackson or Gson. Alternatively, you can modify the JSON string to use a format that can be easily converted to a LocalDateTime object, such as ISO-8601 format.

Here's an example of parsing a JSON string containing a LocalDateTime object using Jackson:

ObjectMapper mapper = new ObjectMapper();
mapper.registerModule(new JavaTimeModule()); // register module to support LocalDateTime objects
String json = "{\"dateTime\":\"2021-10-25T10:15:30\"}";
MyClass myObj = mapper.readValue(json, MyClass.class);

In this example, the `JavaTimeModule` is registered to support LocalDateTime objects, and the JSON string is parsed into a `MyClass` object.

If the JSON string cannot be modified, you may need to manually parse the string and convert it to a LocalDateTime object using a DateTimeFormatter. Here's an example:

String json = "{\"dateTime\":\"2021-10-25T10:15:30\"}";
JsonObject jsonObject = JsonParser.parseString(json).getAsJsonObject();
String dateTimeString = jsonObject.get("dateTime").getAsString();
DateTimeFormatter formatter = DateTimeFormatter.ISO_LOCAL_DATE_TIME;
LocalDateTime dateTime = LocalDateTime.parse(dateTimeString, formatter);

In this example, the JSON string is manually parsed using `JsonParser`, the `dateTime` value is retrieved from the `JsonObject`, and a `DateTimeFormatter` is used to convert the string into a `LocalDateTime` object.