Problem deploying spring microservice project app to heroku - spring

Question

i have been trying to deploy my spring boot microservice app on heroku but i just move from one issue to another, so many tutorials but with different steps, i dont really know what the problem is presently, it has been deployed successfully, but when i try to view the app, it shows application error... i have added a Procfile and a system.properties file but i still dont know what the issue is...
Here is the log details...
-----> Building on the Heroku-20 stack
-----> Using buildpack: heroku/java
-----> Java app detected
-----> Installing OpenJDK 17... done
-----> Executing Maven
$ ./mvnw -DskipTests clean dependency:list install
[INFO] Scanning for projects...
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Build Order:
[INFO]
[INFO] weddingapp [pom]
[INFO] couple [jar]
[INFO]
[INFO] --------------------< com.slinkdigital:weddingapp >---------------------
[INFO] Building weddingapp 1.0-SNAPSHOT [1/2]
[INFO] --------------------------------[ pom ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) # weddingapp ---
[INFO]
[INFO] --- maven-dependency-plugin:2.8:list (default-cli) # weddingapp ---
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) # weddingapp ---
[INFO] Installing /tmp/build_67b8dede/pom.xml to /tmp/codon/tmp/cache/.m2/repository/com/slinkdigital/weddingapp/1.0-SNAPSHOT/weddingapp-1.0-SNAPSHOT.pom
[INFO]
[INFO] ----------------------< com.slinkdigital:couple >-----------------------
[INFO] Building couple 1.0-SNAPSHOT [2/2]
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) # couple ---
[INFO]
[INFO] --- maven-dependency-plugin:2.8:list (default-cli) # couple ---
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) # couple ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 5 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) # couple ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 44 source files to /tmp/build_67b8dede/Couple/target/classes
[INFO] /tmp/build_67b8dede/Couple/src/main/java/com/slinkdigital/couple/config/SecurityConfig.java: /tmp/build_67b8dede/Couple/src/main/java/com/slinkdigital/couple/config/SecurityConfig.java uses or overrides a deprecated API.
[INFO] /tmp/build_67b8dede/Couple/src/main/java/com/slinkdigital/couple/config/SecurityConfig.java: Recompile with -Xlint:deprecation for details.
[INFO]
[INFO] --- maven-resources-plugin:2.6:testResources (default-testResources) # couple ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] skip non existing resourceDirectory /tmp/build_67b8dede/Couple/src/test/resources
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:testCompile (default-testCompile) # couple ---
[INFO] No sources to compile
[INFO]
[INFO] --- maven-surefire-plugin:2.12.4:test (default-test) # couple ---
[INFO] Tests are skipped.
[INFO]
[INFO] --- maven-jar-plugin:2.4:jar (default-jar) # couple ---
[INFO] Building jar: /tmp/build_67b8dede/Couple/target/couple-1.0-SNAPSHOT.jar
[INFO]
[INFO] --- maven-install-plugin:2.4:install (default-install) # couple ---
[INFO] Installing /tmp/build_67b8dede/Couple/target/couple-1.0-SNAPSHOT.jar to /tmp/codon/tmp/cache/.m2/repository/com/slinkdigital/couple/1.0-SNAPSHOT/couple-1.0-SNAPSHOT.jar
[INFO] Installing /tmp/build_67b8dede/Couple/pom.xml to /tmp/codon/tmp/cache/.m2/repository/com/slinkdigital/couple/1.0-SNAPSHOT/couple-1.0-SNAPSHOT.pom
[INFO] ------------------------------------------------------------------------
[INFO] Reactor Summary for weddingapp 1.0-SNAPSHOT:
[INFO]
[INFO] weddingapp ......................................... SUCCESS [ 0.961 s]
[INFO] couple ............................................. SUCCESS [ 4.408 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.788 s
[INFO] Finished at: 2022-07-14T06:49:15Z
[INFO] ------------------------------------------------------------------------
-----> Discovering process types
Procfile declares types -> web
-----> Compressing...
Done: 66.6M
-----> Launching...
Released v24
https://weddingappl.herokuapp.com/ deployed to Heroku
This app is using the Heroku-20 stack, however a newer stack is available.
To upgrade to Heroku-22, see:
https://devcenter.heroku.com/articles/upgrading-to-the-latest-stack
This is my Procfile
web: java -Dspring.profiles.active=default -Dserver.port=$PORT -jar target/*.jar
This is my system.properties file
java.runtime.version=17
And this is my pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.slinkdigital</groupId>
<artifactId>weddingapp</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>pom</packaging>
<name>weddingapp</name>
<url>https://www.slink.com.ng</url>
<description>Wedding Application Project (Parent)</description>
<properties>
<java.version>17</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>17</maven.compiler.source>
<maven.compiler.target>17</maven.compiler.target>
<spring.boot.dependencies.version>2.7.0</spring.boot.dependencies.version>
<spring.boot.maven.plugin.version>2.7.0</spring.boot.maven.plugin.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>${spring.boot.dependencies.version}</version>
<scope>import</scope>
<type>pom</type>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
</dependencies>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>${spring.boot.maven.plugin.version}</version>
<executions>
<execution>
<goals>
<goal>repackage</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>17</source>
<target>17</target>
</configuration>
</plugin>
</plugins>
</build>
<modules>
<module>Couple</module>
</modules>
</project>
This is the pom.xml for couple module
<?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>com.slinkdigital</groupId>
<artifactId>weddingapp</artifactId>
<version>1.0-SNAPSHOT</version>
</parent>
<artifactId>couple</artifactId>
<packaging>jar</packaging>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-api</artifactId>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-impl</artifactId>
<scope>runtime</scope>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt-jackson</artifactId>
<scope>runtime</scope>
<version>0.10.5</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-mail</artifactId>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
</dependencies>
<name>couple</name>
</project>
This is my app.properties
spring.jpa.hibernate.ddl-auto=create-drop
I have added a snapshot of the error am facing...
Please i will appreciate the assistance... i have added heroku postgres addon