ifm3d: "Lib: XMLRPC Timeout - can you `ping' the sensor?" with make test even though I can ping the sensor

Hello Everyone, I am trying to connect to the O3X100 Sensor using ubuntu 18.04 and ROS Melodic. I installed Ifm3d and ifm3d-ros. However, every time I try to connect to the Sensore I get the error message above. This happens when running $ make check in the ifm3d installation as well as when running $ catkin_make run_tests in the ifm3d-ros installation and when running $ roslaunch ifm3d camera.launch. However, I am able to ping the sensor when running $ ping 192.168.0.69 . The output when running $ make check is:

[ 22%] Built target ifm3d_camera_shared
[ 37%] Built target ifm3d_framegrabber_shared
[ 44%] Built target ifm3d_image_shared
[ 51%] Built target gtest
[ 59%] Built target gtest_main
[ 70%] Built target ifm3d-image-tests
[==========] Running 10 tests from 1 test case.
[----------] Global test environment set-up.
[----------] 10 tests from Image
[ RUN      ] Image.MoveCtor
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.MoveCtor (1 ms)
[ RUN      ] Image.MoveAssignmentOperator
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.MoveAssignmentOperator (0 ms)
[ RUN      ] Image.CopyCtor
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.CopyCtor (0 ms)
[ RUN      ] Image.CopyAssignmentOperator
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.CopyAssignmentOperator (1 ms)
[ RUN      ] Image.References
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.References (0 ms)
[ RUN      ] Image.CloudMechanics
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.CloudMechanics (0 ms)
[ RUN      ] Image.XYZImage
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.XYZImage (1 ms)
[ RUN      ] Image.ComputeCartesian
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.ComputeCartesian (0 ms)
[ RUN      ] Image.TimeStamp
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.TimeStamp (1 ms)
[ RUN      ] Image.IlluTemp
unknown file: Failure
C++ exception with description "Lib: XMLRPC Timeout - can you `ping' the sensor?" thrown in the test body.
[  FAILED  ] Image.IlluTemp (0 ms)
[----------] 10 tests from Image (4 ms total)

[----------] Global test environment tear-down
[==========] 10 tests from 1 test case ran. (4 ms total)
[  PASSED  ] 0 tests.
[  FAILED  ] 10 tests, listed below:
[  FAILED  ] Image.MoveCtor
[  FAILED  ] Image.MoveAssignmentOperator
[  FAILED  ] Image.CopyCtor
[  FAILED  ] Image.CopyAssignmentOperator
[  FAILED  ] Image.References
[  FAILED  ] Image.CloudMechanics
[  FAILED  ] Image.XYZImage
[  FAILED  ] Image.ComputeCartesian
[  FAILED  ] Image.TimeStamp
[  FAILED  ] Image.IlluTemp

10 FAILED TESTS
modules/image/test/CMakeFiles/check_image.dir/build.make:57: recipe for target 'modules/image/test/CMakeFiles/check_image' failed
make[3]: *** [modules/image/test/CMakeFiles/check_image] Error 1
CMakeFiles/Makefile2:700: recipe for target 'modules/image/test/CMakeFiles/check_image.dir/all' failed
make[2]: *** [modules/image/test/CMakeFiles/check_image.dir/all] Error 2
CMakeFiles/Makefile2:108: recipe for target 'CMakeFiles/check.dir/rule' failed
make[1]: *** [CMakeFiles/check.dir/rule] Error 2
Makefile:199: recipe for target 'check' failed
make: *** [check] Error 2