Failed to initialize JPA EntityManagerFactory: Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException - spring

Question

I'm working on Spring boot project.
Actually, refactoring code.
And getting this mistake as follows:
Failed to initialize JPA EntityManagerFactory: [PersistenceUnit: default] Unable to build Hibernate SessionFactory; nested exception is org.hibernate.MappingException: Could not determine type for: ru.kataproject.p_sm_airlines_1.entity.Document, at table: passenger, for columns: [org.hibernate.mapping.Column(document)]
Any ideas?
Document.java
import lombok.Getter;
import lombok.Setter;
import ru.kataproject.p_sm_airlines_1.util.enums.DocumentType;
import javax.persistence.*;
import java.time.LocalDateTime;
#Entity
#Getter
#Setter
#Table(name="document")
public class Document {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY, generator = "document_gen")
#SequenceGenerator(name = "document_gen", sequenceName = "document_sequence", allocationSize = 1)
#Column(name = "id", nullable = false)
private Long id;
#Column(name = "document_type", nullable = false)
private DocumentType documentType;
#Column(name = "document_number")
private String documentNumber;
#Column(name = "registration_address")
private String registrationAddress;
#Column(name = "where_issued")
private String whereIssued;
#Column(name = "department_code")
private String departmentCode;
#Column(name = "date_of_issue")
private LocalDateTime dateOfIssue;
//todo one to one link to person entity
#Column(name = "person")
private String person = "link to person entity";
}
Passenger.java
import lombok.*;
import javax.persistence.*;
import java.time.LocalDate;
#Getter
#Setter
#Entity
#AllArgsConstructor
#NoArgsConstructor
#Table(name = "passenger", schema = "public")
public class Passenger {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name="id")
private Long id;
#NonNull
#Column(name="document")
private Document document; // Заглушка , здесь должна быть сущность Document
#NonNull
#Column(name="email")
private String email;
#NonNull
#Column(name="first_name")
private String first_name;
#NonNull
#Column(name="last_name")
private String last_name;
#NonNull
#Column(name="middle_name")
private String middle_name;
#NonNull
#Column(name="date_of_birth")
private LocalDate date_of_birth;
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>ru.kataproject</groupId>
<artifactId>airline_project_1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>airline_project_1</name>
<description>Реализуем функционал авиакомпании на базе прототипа</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.5</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>11</java.version>
<springdoc.openapi.version>1.4.8</springdoc.openapi.version>
<apache-httpcomponents-version>4.5.13</apache-httpcomponents-version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
<version>2.7.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
<version>2.7.4</version>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-ui</artifactId>
<version>${springdoc.openapi.version}</version>
</dependency>
<dependency>
<groupId>org.springdoc</groupId>
<artifactId>springdoc-openapi-data-rest</artifactId>
<version>${springdoc.openapi.version}</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>${apache-httpcomponents-version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>2.7.4</version>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.5.0</version>
</dependency>
<dependency>
<groupId>org.thingsboard</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>3.0.4</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
<version>2.7.0</version>
</dependency>
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
</dependency>
<dependency>
<groupId>org.testcontainers</groupId>
<artifactId>postgresql</artifactId>
<version>1.17.4</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.testcontainers</groupId>
<artifactId>testcontainers</artifactId>
<version>1.17.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.testcontainers</groupId>
<artifactId>junit-jupiter</artifactId>
<version>1.17.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
<version>2.7.3</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.keycloak</groupId>
<artifactId>keycloak-spring-boot-starter</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.keycloak.bom</groupId>
<artifactId>keycloak-adapter-bom</artifactId>
<version>12.0.3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>

Answer 1

You should map entities with #ManyToOne or #OneToOne i.e.
#NonNull
#ManyToOne(fetch = LAZY)
#JoinColumn(name="document")
private Document document;