CMake Error when running catkin_make or catkin build

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I am currently following these instructions to install the Franka Ros interface. I have to build it from source and am currently at the step where I need to install the Ros packages. When I get to this command:

catkin_make -DCMAKE_BUILD_TYPE=Release -DFranka_DIR:PATH=/path/to/libfranka/build

t throws the following Error Message:

Base path: /home/dxc/franka-ros/catkin_ws
Source space: /home/dxc/franka-ros/catkin_ws/src
Build space: /home/dxc/franka-ros/catkin_ws/build
Devel space: /home/dxc/franka-ros/catkin_ws/devel
Install space: /home/dxc/franka-ros/catkin_ws/install
####
#### Running command: "cmake /home/dxc/franka-ros/catkin_ws/src -DFranka_DIR:PATH=/path/to/libfranka/build -DCATKIN_DEVEL_PREFIX=/home/dxc/franka-ros/catkin_ws/devel -DCMAKE_INSTALL_PREFIX=/home/dxc/franka-ros/catkin_ws/install -G Unix Makefiles" in "/home/dxc/franka-ros/catkin_ws/build"
####
-- The C compiler identification is GNU 7.5.0
-- The CXX compiler identification is GNU 7.5.0
-- Check for working C compiler: /usr/bin/cc
-- Check for working C compiler: /usr/bin/cc -- works
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Detecting C compile features
-- Detecting C compile features - done
-- Check for working CXX compiler: /usr/bin/c++
-- Check for working CXX compiler: /usr/bin/c++ -- works
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Using CATKIN_DEVEL_PREFIX: /home/dxc/franka-ros/catkin_ws/devel
-- Using CMAKE_PREFIX_PATH: /opt/ros/melodic
-- This workspace overlays: /opt/ros/melodic
-- Found PythonInterp: /usr/bin/python2 (found suitable version "2.7.17", minimum required is "2") 
-- Using PYTHON_EXECUTABLE: /usr/bin/python2
-- Using Debian Python package layout
-- Using empy: /usr/bin/empy
-- Using CATKIN_ENABLE_TESTING: ON
-- Call enable_testing()
-- Using CATKIN_TEST_RESULTS_DIR: /home/dxc/franka-ros/catkin_ws/build/test_results
-- Found gtest sources under '/usr/src/googletest': gtests will be built
-- Found gmock sources under '/usr/src/googletest': gmock will be built
-- Found PythonInterp: /usr/bin/python2 (found version "2.7.17") 
-- Looking for pthread.h
-- Looking for pthread.h - found
-- Looking for pthread_create
-- Looking for pthread_create - not found
-- Looking for pthread_create in pthreads
-- Looking for pthread_create in pthreads - not found
-- Looking for pthread_create in pthread
-- Looking for pthread_create in pthread - found
-- Found Threads: TRUE  
-- Using Python nosetests: /usr/bin/nosetests-2.7
-- catkin 0.7.29
-- BUILD_SHARED_LIBS is on
-- BUILD_SHARED_LIBS is on
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- ~~  traversing 9 packages in topological order:
-- ~~  - franka_description
-- ~~  - franka_ros (metapackage)
WARNING: The CMakeLists.txt of the metapackage 'franka_ros' contains non standard content. Use the content of the following file instead: /home/dxc/franka-ros/catkin_ws/build/catkin_generated/metapackages/franka_ros/CMakeLists.txt
-- ~~  - franka_msgs
-- ~~  - franka_gripper
-- ~~  - franka_visualization
-- ~~  - franka_hw
-- ~~  - franka_control
-- ~~  - franka_example_controllers
-- ~~  - franka_gazebo
-- ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CMake Error at /opt/ros/melodic/share/catkin/cmake/catkin_workspace.cmake:100 (message):
  This workspace contains non-catkin packages in it, and catkin cannot build
  a non-homogeneous workspace without isolation.  Try the
  'catkin_make_isolated' command instead.
Call Stack (most recent call first):
  CMakeLists.txt:69 (catkin_workspace)


-- Configuring incomplete, errors occurred!
See also "/home/dxc/franka-ros/catkin_ws/build/CMakeFiles/CMakeOutput.log".
See also "/home/dxc/franka-ros/catkin_ws/build/CMakeFiles/CMakeError.log".
Invoking "cmake" failed

After a bit of research I found many answers that suggested using catkin build instead ... (more)