mvn apt:process do not create Q-classes

Please help to figure out what is a problem. I suppose I have done everything, but mvn apt:process do not generate Q-classes. Maybe I have done smth wrong within code. Or I have not written smth. I am doing new project using code from older. And I can not even check it's workability before solving this problem. I have needed plugin in pom.xml file. Here is a link to my project on GitHub. https://github.com/zaharovmykola/uniwersytet Thank you in advance.

I do not have any errors. [INFO] BUILD SUCCESS - but there are not created classes

I use next dependencies:

    <dependency>
        <groupId>org.apache.commons</groupId>
        <artifactId>commons-lang3</artifactId>
        <version>3.9</version>
    </dependency>
    <dependency>
        <groupId>com.querydsl</groupId>
        <artifactId>querydsl-apt</artifactId>
        <version>${querydsl.version}</version>
    </dependency>
    <dependency>
        <groupId>com.querydsl</groupId>
        <artifactId>querydsl-jpa</artifactId>
        <version>${querydsl.version}</version>
    </dependency>

And next plugin:

          <plugin>
            <groupId>com.mysema.maven</groupId>
            <artifactId>apt-maven-plugin</artifactId>
            <version>1.1.3</version>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>process</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>target/generated-sources</outputDirectory>
                        <processor>com.querydsl.apt.jpa.JPAAnnotationProcessor</processor>
                    </configuration>
                </execution>
            </executions>
        </plugin>