JavaFX application with module-info.java module not found

Hello, 

I'm trying to create an application with javaFX and Maven and everything worked well till I added the module-info.java.

Here's my module-info.java :

module IP_tracker {
    requires javafx.controls;
    requires pdfbox.app;
}

Now when I run my application the following error pop :

Error occurred during initialization of boot layer
java.lang.module.FindException: Module IP_tracker not found

Do you have any idea ? I've tried a lot of things such as beginning from scratch but I'm totally stuck.

Here's 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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.example</groupId>
  <artifactId>IP_tracker</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>

    <name>IP_tracker</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>9</maven.compiler.source>
    <maven.compiler.target>9</maven.compiler.target>
  </properties>

  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
      <dependency>
          <groupId>org.openjfx</groupId>
          <artifactId>javafx-graphics</artifactId>
          <version>15.0.1</version>
      </dependency>
      <dependency>
          <groupId>org.openjfx</groupId>
          <artifactId>javafx-controls</artifactId>
          <version>15.0.1</version>
      </dependency>
  </dependencies>

  <build>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <groupId>org.openjfx</groupId>
          <artifactId>javafx-maven-plugin</artifactId>
          <version>0.0.5</version>
          <configuration>
            <compress>2</compress>
            <noHeaderFiles>true</noHeaderFiles>
            <stripDebug>true</stripDebug>
            <noManPages>true</noManPages>
            <jlinkZipName>IP_tracker</jlinkZipName>
            <mainClass>IP_tracker/org.example.MainApp</mainClass>
            <launcher>IP_tracker</launcher>
            <jlinkImageName>IP_tracker</jlinkImageName>
          </configuration>
          <executions>
            <execution>
              <!-- Default configuration for running -->
              <!-- Usage: mvn clean javafx:run -->
              <id>default-cli</id>
            </execution>
          </executions>
        </plugin>
        <!-- clean lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#clean_Lifecycle -->
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- default lifecycle, jar packaging: see https://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_jar_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-jar-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
        <!-- site lifecycle, see https://maven.apache.org/ref/current/maven-core/lifecycles.html#site_Lifecycle -->
        <plugin>
          <artifactId>maven-site-plugin</artifactId>
          <version>3.7.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-project-info-reports-plugin</artifactId>
          <version>3.0.0</version>
        </plugin>
      </plugins>
    </pluginManagement>
      <plugins>
          <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-compiler-plugin</artifactId>
              <version>3.8.1</version>
              <configuration>
                  <source>9</source>
                  <target>9</target>
              </configuration>
          </plugin>
      </plugins>
  </build>
</project>

Thanks for your help.