Problem with deploying spring boot application - spring-boot

Question

I have a problem deploying my Spring boot application.
First I tried to deploy it on heroku, but there was an error.
The same error appeared when I was trying to deploy it locally
This is it:
...
[INFO] --- maven-surefire-plugin:2.22.2:test (default-test) # portfolio_app ---
[INFO]
[INFO] --- maven-jar-plugin:3.2.0:jar (default-jar) # portfolio_app ---
[INFO] Building jar: C:\JetBrains\portfolio_app\target\portfolio_app-1.0-SNAPSHOT.jar
[INFO]
[INFO] --- spring-boot-maven-plugin:2.3.3.RELEASE:repackage (repackage) # portfolio_app ---
[INFO] Replacing main artifact with repackaged archive
[INFO]
[INFO] --- maven-install-plugin:2.5.2:install (default-install) # portfolio_app ---
[INFO] Installing C:\JetBrains\portfolio_app\target\portfolio_app-1.0-SNAPSHOT.jar to C:\Users\matni\.m2\repository\eu\mnrdesign\matned\portfolio_app\1.0-SNAPSHOT\portfolio_app-1.0-SNAPSHOT.jar
[INFO] Installing C:\JetBrains\portfolio_app\pom.xml to C:\Users\matni\.m2\repository\eu\mnrdesign\matned\portfolio_app\1.0-SNAPSHOT\portfolio_app-1.0-SNAPSHOT.pom
[INFO]
[INFO] --- maven-deploy-plugin:2.8.2:deploy (default-deploy) # portfolio_app ---
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4.996 s
[INFO] Finished at: 2020-09-29T10:02:24+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-deploy-plugin:2.8.2:deploy (default-deploy) on project portfolio_app: Deployment failed: repository element was not specified in the POM inside distributionManagement element or in -DaltDeploymentRepository=id::layout::url parameter -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
I guess it is an issue with my pom:
<?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 http://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>2.3.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.group.nden</groupId>
<artifactId>portfolio_app</artifactId>
<version>1.0-SNAPSHOT</version>
<name>portfolio_app</name>
<description>desc</description>
<url>http://maven.apache.org</url>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<!-- SPRING BOOT-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<!-- SPRING BOOT-->
<!-- THYMELEAF-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.thymeleaf/thymeleaf -->
<dependency>
<groupId>org.thymeleaf</groupId>
<artifactId>thymeleaf</artifactId>
<version>3.0.11.RELEASE</version>
</dependency>
<dependency>
<groupId>org.thymeleaf.extras</groupId>
<artifactId>thymeleaf-extras-springsecurity4</artifactId>
<version>3.0.4.RELEASE</version>
</dependency>
<!-- THYMELEAF-->
<!-- SESSION-->
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-core</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session-jdbc</artifactId>
</dependency>
<!-- SESSION-->
<!-- DATABASE-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<!-- DATABASE-->
<!-- PROGRAMING-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<!-- PROGRAMING-->
<!-- VALIDATION-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<!-- VALIDATION-->
<!-- CAPTCHA-->
<dependency>
<groupId>com.google.api-client</groupId>
<artifactId>google-api-client</artifactId>
<version>1.30.10</version>
</dependency>
<!-- CAPTCHA-->
<!-- MAIL -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
<version>2.2.5.RELEASE</version>
</dependency>
<!-- MAIL -->
<!-- TESTING-->
<dependency>
<groupId>com.github.tomakehurst</groupId>
<artifactId>wiremock-standalone</artifactId>
<version>2.26.3</version>
<scope>test</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/org.mockito/mockito-core -->
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>3.5.10</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<!-- TESTING-->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>com.heroku.sdk</groupId>
<artifactId>heroku-maven-plugin</artifactId>
<version>3.0.3</version>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
I have no idea what to do.
I put it on a public repository so any sensitive data cannot be there...
The best thing is that I had almost the same application
with mostly the same pom and everything was alright.
I am confused.

Answer 1

Finally I have managed the problem.
First of all, I had to make a repository in pom.xml
<distributionManagement>
<repository>
<id>myrepository</id>
<url>file:.mvn/maven-repo</url>
</repository>
</distributionManagement>
than i had to delete prosperities with java version (from pom.xml).
I have created a system.properities in the main folder of my app.
there I have put java version, this:
java.runtime.version=11
Than I had to do simply 'mvn deploy'
Then heroku wanted my app.
Works fine.