I have a Kotlin app built on Spring Boot 2.3.4. This version of Spring Boot includes Hibernate 5.4.21. I've also imported mysql-connector-java 8.0.21.

Whenever I try to persist an Instant object into my database, I get the following exception:

```
com.mysql.cj.jdbc.exceptions.MysqlDataTruncation: Data truncation: Incorrect datetime value: '\xAC\xED\x00\x05sr\x00\x0Djava.time.Ser\x95]\x84\xBA\x1B"H\xB2\x0C\x00\x00xpw\x0D\x02\x00\x00\x00\x00_\xCDvA)\xE6Jxx' for column 'myDateTimeColumn' at row 1

```

Here's the object I'm trying to persist, in Kotlin; it only has two fields:

```
@Entity
class RoomEntity{
    @Id
    lateinit var roomId: String
    lateinit var lastAccessedAt: Instant
}

```

The table I'm trying to save it to has two columns: `roomId` is a CHAR(7), and `lastAccessedAt` is a TIMESTAMP.

[![enter image description here](https://i.stack.imgur.com/y8rnM.png)](https://i.stack.imgur.com/y8rnM.png)

The code that does the save is only 2 lines long:

```
val sql = "INSERT INTO mydb.rooms (roomId, lastAccessedAt) VALUES (?, ?);"
db.update(sql, "1234567", Instant.now())

```

I've looked at [other](https://stackoverflow.com/questions/36363913/unable-to-use-java-time-localdate-in-jpa-entity-with-mysql) [SO](https://stackoverflow.com/questions/23718383/jpa-support-for-java-8-new-date-and-time-api) [posts](https://stackoverflow.com/questions/20088808/data-truncation-incorrect-datetime-value) similar to my issue, but the answers all say to update to version 5.2+ of Hibernate, which I am using. What could be causing this exception?