SQL Error: 1062, SQLState: 23000 Duplicate entry '1' for key 'UK_miislg5rujgruv45l3hv00cn2'

Programação
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#1

Estou tentando salvar Product no banco de dados, parece bem, mas sempre tenho esse erro de integridade.

SQL Error: 1062, SQLState: 23000 Duplicate entry '1' for key 'UK_miislg5rujgruv45l3hv00cn2'

MInhas Classes

@Entity
public class Product implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @NotNull
    private String title;
    @NotNull
    private String description;
    @NotNull
    private double price;
    @OneToOne(fetch = FetchType.EAGER, optional = false)
    @JoinColumn(name = "category_id", nullable = false)
    private Category category;
    private boolean isSold;
    @OneToOne(fetch = FetchType.EAGER, optional = false)
    @JoinColumn(name = "currency_id", nullable = false)
    private Currency currency;
    @OneToOne(fetch = FetchType.EAGER, optional = false)
    @JoinColumn(name = "user_id", nullable = false)
    private User user;
    @Nullable
    @OneToMany(mappedBy = "product",
            cascade = CascadeType.ALL, orphanRemoval = true)
    private List<Images> images;
    private Date createdDate = new Date();
    @OneToOne(fetch = FetchType.EAGER,
            cascade = CascadeType.ALL,
            mappedBy = "product")
    private View view;
    @OneToOne(fetch = FetchType.EAGER)
    @JoinColumn(name="type_id")
    private Type type;
    private Long viewCount;}

@Entity
@JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class Category implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private String imagePath;
    @OneToOne(cascade = CascadeType.ALL,
    mappedBy = "category")
    @JsonIgnore
    private Product product;
    @OneToMany(mappedBy = "category", fetch = FetchType.EAGER,
            cascade = CascadeType.ALL)
    private Set<Brand> brands;
}

@Entity
public class Currency implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String code;
    private String currency;
    private String region_country;
    @JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
    @OneToOne(mappedBy = "currency", cascade = CascadeType.ALL, fetch = FetchType.LAZY)
    @JsonIgnore
    private Product product;
}

@Entity
public class Images implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String imagePath;
    @JsonIgnore
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "product_id")
    private Product product;
}

@Entity
public class Type implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @NotNull
    private String name;
    @OneToOne(fetch = FetchType.LAZY,
            cascade = CascadeType.ALL,
            mappedBy = "type")
    @JsonIgnore
    private Product product;
}

@Entity
public class User implements UserDetails, Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @NotEmpty
    private String fullName;
    @NotEmpty
    @Email
    @Column(unique = true)
    private String email;
    @NotNull
    @Column(unique = true)
    private int phoneNumber;
    @NotEmpty
    @Size(min = 5)
    private String password;
    private Date createAt = new Date();
    @Nullable
    private String picPath;
    @Nullable
    private String token;
    @ManyToMany
    @JoinTable(name = "user_roles", joinColumns = {@JoinColumn(
            name = "user_id")},
            inverseJoinColumns = {@JoinColumn(name = "role_id")})
    private List<Role> roles;
    @OneToOne(fetch = FetchType.EAGER,
            cascade = CascadeType.ALL,
            mappedBy = "user")
    @JsonIgnore
    private Product product;
    @OneToOne(fetch = FetchType.LAZY,
    cascade = CascadeType.ALL,
    mappedBy = "user")
    private View view;
}

@Entity
public class View implements Serializable {
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    @OneToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "user_id", nullable = false)
    @JsonIgnore
    private User user;
    @OneToOne(fetch = FetchType.LAZY, optional = false)
    @JoinColumn(name = "product_id", nullable = false)
    @JsonIgnore
    private Product product;
}
#2

UK normalmente é a abreviação de unique key.
Sendo isso, vc não pode salvar produtos iguais ou diferentes com a mesma chave única.

É estranho pois na classe produto não tem uma “coluna” do tipo unique, podendo indicar que o banco de dados pode ter sido criado antes da ação do hibernate, usando migrations por exemplo.

No banco de dados, procure as tabelas que tem chave única, começando pela classe produto.