Unexpected error when make px4_sitl

hello, im newbie of PX4/ros2. i just followed Notion – The all-in-one workspace for your notes, tasks, wikis, and databases., and when i execute make px4_sitl gz_x500, i saw the error like:

CMake Error at src/modules/simulation/gz_bridge/CMakeLists.txt:126 (add_custom_target):

add_custom_target cannot create target “gz_x500_aruco” because another

target with the same name already exists. The existing target is a custom

target created in source directory

“/home/rkdwhddud/PX4-Autopilot/src/modules/simulation/gz_bridge”. See

documentation for policy CMP0002 for more details.

-----------------…repeated CMake error blabla…-----------------

CMake Error at src/modules/simulation/gz_bridge/CMakeLists.txt:126 (add_custom_target):

add_custom_target cannot create target “gz_omnicopter_aruco” because

another target with the same name already exists. The existing target is a

custom target created in source directory

“/home/rkdwhddud/PX4-Autopilot/src/modules/simulation/gz_bridge”. See

documentation for policy CMP0002 for more details.

– Found Java: /usr/bin/java (found version “11.0.24”)

– ROMFS: ROMFS/px4fmu_common

Architecture: amd64

==> CPACK_INSTALL_PREFIX = @DEB_INSTALL_PREFIX@

– Configuring incomplete, errors occurred!

See also “/home/rkdwhddud/PX4-Autopilot/build/px4_sitl_default/CMakeFiles/CMakeOutput.log”.

Error: /home/rkdwhddud/PX4-Autopilot/build/px4_sitl_default is not a directory

make: *** [Makefile:232: px4_sitl] Error 1

i also tried

git clone https://github.com/PX4/PX4-Autopilot.git --recursive
bash ./PX4-Autopilot/Tools/setup/ubuntu.sh
cd PX4-Autopilot/
make px4_sitl

but i saw same error.
i tried to find this error almost 6 hours, but i could’t do anything. please somebody save me.

Try to reinstall PX4, i had same issue, it helped me