Mysql – Java Spring Could not determine recommended JdbcType for <class>

I am writing a small program in Java with Spring boot. It is connecting to a MySQL Database that is dockerized. upon running the program, I get the following Error message

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘entityManagerFactory’ defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]: Could not determine recommended JdbcType for org.workshop.spring.CourseApi.Course

Upon Googleing that, I found a YouTube video that basically tells you to verify your application.yml file as well as this stack overflow thread, with no marked solution.
Could not determine recommended JdbcType for <class>

As of now there are no relations between my entities and the class that’s causing the problem, according to the Error message is this one

package org.workshop.spring.CourseApi;

import jakarta.persistence.Entity;
import jakarta.persistence.GeneratedValue;
import jakarta.persistence.GenerationType;
import jakarta.persistence.Id;
import jakarta.persistence.Table;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

@Data
@NoArgsConstructor
@AllArgsConstructor
@Entity
@Table
public class Course {
    @Id
    @GeneratedValue(strategy=GenerationType.AUTO)
    private Integer id;
    private String subject;
    private Coach responsibleCoach;
    private Student[] attendingStudents;

}

To be complete I’ll add the application.yml below

spring:
    datasource:
        username: root
        password: 123
        url: jdbc:mysql://localhost:6033/school_db
        driver-class-name: com.mysql.cj.jdbc.Driver
    jpa:
        generate-ddl: true
        hibernate:
            ddl:
                auto: true #allowes for creation and modification of the database schema
        show-sql: true # prints sql statements to console

I tried connecting to the database by hand, using the same data as I configured and that works, also if I shut down the Docker Containers, the connection fails, which is expected and makes me think the problem stems from the programming side.

I Also tried changing the MySQL connector in the pom.xml but the one used hereSpring boot guides repo seems to be outdated as the initializer provides the one I am currently using.

As requested here is the pom.xml file:

<?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>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>3.0.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>org.workshop.spring</groupId>
    <artifactId>CourseApi</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>CourseApi</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>20</java.version>
    </properties>
<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>com.mysql</groupId>
            <artifactId>mysql-connector-j</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

And the docker-compose.yml:

version: '3'


networks:
    mysql-phpmyadmin:
        name: mysql-phpmyadmin
        driver: bridge

volumes:
    mysqldata:
        driver: local
        driver_opts:
            type: 'none'
            o: 'bind'
            device: '${HOME}/Documents/test/mysql-phpmyadmin/data'

services:
    mysql:
        image: mysql:latest
        container_name: mysql
        environment:
            MYSQL_ROOT_PASSWORD: 123
            MYSQL_DATABASE: shoolapi_db
            MYSQL_USER: user
            MYSQL_PASSWORD: 123
        ports:
        - "6033:3306"
        expose:
        - "3306"
        volumes:
            - mysqldata:/var/lib/mysql
        networks:
          mysql-phpmyadmin:
           aliases:
              - mysql


    phpmyadmin:
        image: phpmyadmin:latest
        container_name: phpmyadmin
        links:
            - mysql
        environment:
            PMA_HOST: mysql
            PMA_PORT: 3306
        ports:
            - 8081:80
        networks:
          mysql-phpmyadmin:
               aliases:
                 - phpmyadmin      

I am at my wits end and I hope one of you can provide me with some insight.
Thank you