由于"package javafx.collections不存在“错误，Maven无法编译

<dependencies>
  <dependency>
    <groupId>org.openjfx</groupId>
    <artifactId>javafx-controls</artifactId>
    <version>15</version>
  </dependency>
  <dependency>
    <groupId>org.openjfx</groupId>
    <artifactId>javafx-fxml</artifactId>
    <version>15</version>
  </dependency>
  <!-- 其他依赖 -->
</dependencies>

<build>
  <plugins>
    <plugin>
      <groupId>org.openjfx</groupId>
      <artifactId>javafx-maven-plugin</artifactId>
      <version>0.0.7</version>
      <executions>
        <execution>
          <id>default-cli</id>
          <configuration>
            <mainClass>com.example.Main</mainClass>
          </configuration>
        </execution>
      </executions>
    </plugin>
    <!-- 其他插件 -->
  </plugins>
</build>

module com.example {
  // 其他模块声明
  requires javafx.controls;
  requires javafx.fxml;
}