Spring boot CrudRepository save - exception is org.hibernate.type.SerializationException: could not serialize

Not sure why I have an issue here, but when I save with a CrudRepository with these objects, I get the SerializationException (with no further information). Can someone take a look at my objects and offer me some insight into why they can't serialize? My pom.xml is attached last as well in case that helps somehow. I'm using a Postgres database.

EDIT: The database and now - tables are created, but objects are not creating rows.

The actual CrudRepository interface:

public interface AccountRepository extends CrudRepository<ZanyDishAccount, String> {}

ZanyDishAccount entity:

@Entity
public class ZanyDishAccount {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Long id;   // internal id of the customer account for a Zany Dish subscription

    private String status;

    @OneToOne(cascade=CascadeType.ALL, fetch = FetchType.EAGER)
    @JoinColumn(name = "company_id")
    private Company company;

    @OneToOne(cascade=CascadeType.ALL, fetch = FetchType.EAGER)
    @JoinColumn(name = "order_id")
    private Order order;

    public ZanyDishAccount() {}
    public ZanyDishAccount(Company company, Order order) {

        this.company = company;
        this.order = order;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public Company getCompany() {
        return company;
    }

    public void setCompany(Company company) {
        this.company = company;
    }

    public Order getOrder() {
        return order;
    }

    public void setOrder(Order order) {
        this.order = order;
    }

    public String getStatus() {
        return status;
    }

    public void setStatus(String status) {
        this.status = status;
    }

    @Override
    public String toString()
    {
        return "ClassPojo [id = "+id+ ", company = " + company + ", status = " + status + "]";
    }

}

Company entity:

@Entity
public class Company {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    Long id;

    private String phoneNumber;

    private String website;

    private String name;

    private String uuid;

    private String country;

    public Company() {}
    public Company(String phoneNumber, String website, String name, String uuid, String country) {

        this.phoneNumber = phoneNumber;
        this.website = website;
        this.uuid = uuid;
        this.country = country;
    }

    public String getPhoneNumber ()
    {
        return phoneNumber;
    }

    public void setPhoneNumber (String phoneNumber)
    {
        this.phoneNumber = phoneNumber;
    }

    public String getWebsite ()
    {
        return website;
    }

    public void setWebsite (String website)
    {
        this.website = website;
    }

    public String getName ()
    {
        return name;
    }

    public void setName (String name)
    {
        this.name = name;
    }

    public String getUuid ()
    {
        return uuid;
    }

    public void setUuid (String uuid)
    {
        this.uuid = uuid;
    }

    public String getCountry ()
    {
        return country;
    }

    public void setCountry (String country)
    {
        this.country = country;
    }

    @Override
    public String toString()
    {
        return "ClassPojo [phoneNumber = "+phoneNumber+", website = "+website+", name = "+name+", uuid = "+uuid+", country = "+country+"]";
    }
}

Order entity:

@Entity
@Table(name = "_order")
public class Order {

    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    Long id;

    private String pricingDuration;

    private Items[] items;

    private String editionCode;

    public Order() {}

    public Order(String pricingDuration, Items[] items, String editionCode) {

        this.pricingDuration = pricingDuration;
        this.items = items;
        this.editionCode = editionCode;
    }

    public Long getId() {
        return id;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public String getPricingDuration ()
    {
        return pricingDuration;
    }

    public void setPricingDuration (String pricingDuration)
    {
        this.pricingDuration = pricingDuration;
    }

    public Items[] getItems ()
    {
        return items;
    }

    public void setItems (Items[] items)
    {
        this.items = items;
    }

    public String getEditionCode ()
    {
        return editionCode;
    }

    public void setEditionCode (String editionCode)
    {
        this.editionCode = editionCode;
    }

    @Override
    public String toString()
    {
        return "ClassPojo [pricingDuration = "+pricingDuration+", items = "+items+", editionCode = "+editionCode+"]";
    }
}

Thanks for your help!

Mike