Step 19/31 : RUN . /opt/ros/$ROS_DISTRO/setup.sh && apt-get update && rosdep install -q -y --from-paths src --ignore-src && rm -rf /var/lib/apt/lists/*
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Get:1 http://packages.ros.org/ros2-testing/ubuntu focal InRelease [3910 B]
Get:2 http://security.ubuntu.com/ubuntu focal-security InRelease [97.9 kB]
Get:3 http://archive.ubuntu.com/ubuntu focal InRelease [265 kB]
Get:4 http://archive.ubuntu.com/ubuntu focal-updates InRelease [89.1 kB]
Get:5 http://packages.ros.org/ros2-testing/ubuntu focal/main amd64 Packages [16.3 kB]
Get:6 http://archive.ubuntu.com/ubuntu focal-backports InRelease [89.2 kB]
Get:7 http://archive.ubuntu.com/ubuntu focal/universe amd64 Packages [11.3 MB]
Get:8 http://archive.ubuntu.com/ubuntu focal/restricted amd64 Packages [33.5 kB]
Get:9 http://archive.ubuntu.com/ubuntu focal/main amd64 Packages [1281 kB]
Get:10 http://archive.ubuntu.com/ubuntu focal/multiverse amd64 Packages [177 kB]
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Reading package lists...
�[91mERROR: the following packages/stacks could not have their rosdep keys resolved
to system dependencies:
gazebo_dev: No definition of [libgazebo9-dev] for OS version [focal]
�[0mThe command '/bin/sh -c . /opt/ros/$ROS_DISTRO/setup.sh && apt-get update && rosdep install -q -y --from-paths src --ignore-src && rm -rf /var/lib/apt/lists/*' returned a non-zero code: 1