Error building rosjava

[Rezenders]

Following the tutorial I am getting the following error at catkin_make:

[100%] Gradling tasks for rosjava_extras
warning: [options] bootstrap class path not set in conjunction with -source 1.7
1 warning

FAILURE: Build failed with an exception.

* What went wrong:
Could not resolve all files for configuration ':cv_bridge_javacv:compileClasspath'.
> Could not resolve org.bytedeco:javacpp:1.4.3.
  Required by:
      project :cv_bridge_javacv > org.bytedeco.javacpp-presets:opencv:3.4.3-1.4.3
   > Could not resolve org.bytedeco:javacpp:1.4.3.
      > Could not get resource 'https://github.com/rosjava/rosjava_mvn_repo/raw/master/org/bytedeco/javacpp/1.4.3/javacpp-1.4.3.pom'.
         > Could not GET 'https://github.com/rosjava/rosjava_mvn_repo/raw/master/org/bytedeco/javacpp/1.4.3/javacpp-1.4.3.pom'.
            > Read timed out

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 50s
rosjava_extras/CMakeFiles/gradle-rosjava_extras.dir/build.make:57: recipe for target 'rosjava_extras/CMakeFiles/gradle-rosjava_extras' failed
make[2]: *** [rosjava_extras/CMakeFiles/gradle-rosjava_extras] Error 1
CMakeFiles/Makefile2:2783: recipe for target 'rosjava_extras/CMakeFiles/gradle-rosjava_extras.dir/all' failed
make[1]: *** [rosjava_extras/CMakeFiles/gradle-rosjava_extras.dir/all] Error 2
Makefile:138: recipe for target 'all' failed
make: *** [all] Error 2