Whenever I work on a project using Maven on VSC, I always get "[module name] cannot be resolved to a module". For example, in my project made using the JavaFX Template, only JavaFX works and when I try to load gson it does not work. It does not allow me to import or require any new dependency. This is when I add new dependencies through VSCs inbuilt add maven dependencies function.

My module-info.java

module com.example {
    requires javafx.controls;
    requires javafx.fxml;

    opens com.example.controllers to javafx.fxml;

    exports com.example;
    exports com.example.controllers; 
}

My pom.xml

<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/maven-v4_0_0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>com.example</groupId>
    <artifactId>maron</artifactId>
    <version>1</version>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>11</maven.compiler.source>
        <maven.compiler.target>11</maven.compiler.target>
    </properties>
    <dependencies>

        <dependency>
            <groupId>com.google.code.gson</groupId>
            <artifactId>gson</artifactId>
            <version>2.11.0</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-controls</artifactId>
            <version>13</version>
        </dependency>
        <dependency>
            <groupId>org.openjfx</groupId>
            <artifactId>javafx-fxml</artifactId>
            <version>13</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.0</version>
                <configuration>
                    <release>11</release>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.openjfx</groupId>
                <artifactId>javafx-maven-plugin</artifactId>
                <version>0.0.6</version>
                <executions>
                    <execution>
                        <!-- Default configuration for running -->
                        <!-- Usage: mvn clean javafx:run -->
                        <id>default-cli</id>
                        <configuration>
                            <mainClass>com.example.App</mainClass>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

I tried mvn clean install but it still does not work. I also updated maven too.

I've always had trouble running my maven projects that use Gson in the cmd line / terminal getting errors at runtime like:

Exception in thread "main" java.lang.NoClassDefFoundError: com/google/gson/Gson

at controllers.CourseSchedulerController.findCorrectOrder(CourseSchedulerController.java:28)

at Scheduler.main(Scheduler.java:13)

I suppose IDEs like IntelliJ handle dependencies for you but there should be a way to add this dependency when I run from terminal right? These are the commands i'm running:

mvn clean install

mvn compile

mvn clean package

java -cp target/course_scheduler-1.0-SNAPSHOT.jar Scheduler