Build error - Githubissues

When I build my pc on Ubuntu20.04 , I faced this error.
[ 10%] Performing test step for 'state-observation'
Test project /home/irsl/workspace/build/state-observation
      Start  1: test-kalman-filter
 1/11 Test  #1: test-kalman-filter .......................***Failed    0.00 sec
      Start  2: imu-test
 2/11 Test  #2: imu-test .................................***Failed    0.00 sec
      Start  3: imu-multiplicative-test
 3/11 Test  #3: imu-multiplicative-test ..................***Failed    0.00 sec
      Start  4: flex-estimation-test
 4/11 Test  #4: flex-estimation-test .....................***Failed    0.00 sec
      Start  5: simple-flex-estimation-test
 5/11 Test  #5: simple-flex-estimation-test ..............***Failed    0.00 sec
      Start  6: other-tests
 6/11 Test  #6: other-tests ..............................***Failed    0.00 sec
      Start  7: test_acceleration_stabilization
 7/11 Test  #7: test_acceleration_stabilization ..........***Failed    0.00 sec
      Start  8: test_model-base-ekf-flex-estimator-imu
 8/11 Test  #8: test_model-base-ekf-flex-estimator-imu ...***Failed    0.00 sec
      Start  9: test-kinetics-observer
 9/11 Test  #9: test-kinetics-observer ...................***Failed    0.00 sec
      Start 10: test-dcm-bias-estimation
10/11 Test #10: test-dcm-bias-estimation .................***Failed    0.00 sec
      Start 11: test-kinematics
11/11 Test #11: test-kinematics ..........................***Failed    0.00 sec

0% tests passed, 11 tests failed out of 11

Total Test time (real) =   0.03 sec

The following tests FAILED:
          1 - test-kalman-filter (Failed)
          2 - imu-test (Failed)
          3 - imu-multiplicative-test (Failed)
          4 - flex-estimation-test (Failed)
          5 - simple-flex-estimation-test (Failed)
          6 - other-tests (Failed)
          7 - test_acceleration_stabilization (Failed)
          8 - test_model-base-ekf-flex-estimator-imu (Failed)
          9 - test-kinetics-observer (Failed)
         10 - test-dcm-bias-estimation (Failed)
         11 - test-kinematics (Failed)
Errors while running CTest
Output from these tests are in: /home/irsl/workspace/build/state-observation/Testing/Temporary/LastTest.log
Use "--rerun-failed --output-on-failure" to re-run the failed cases verbosely.
CMake Error at /home/irsl/workspace/mc-rtc-superbuild/cmake/scripts/cmake-with-prefix.cmake:20 (execute_process):
  execute_process failed command indexes:

    1: "Child return code: 8"

make[2]: *** [CMakeFiles/state-observation.dir/build.make:117: prefix/state-observation/src/state-observation-stamp/state-observation-test] Error 1
make[1]: *** [CMakeFiles/Makefile2:1754: CMakeFiles/state-observation.dir/all] Error 2
make: *** [Makefile:146: all] Error 2
mc-rtc / mc-rtc-superbuild

Build error #25
