Please navigate to directory L2/tests, and change the setting of environment variable TA_PATH to point to the installation path of your Vitis, and run following command to set up Vivado_hls environment.
export XILINX_VITIS=${TA_PATH}/Vitis/2022.2 export XILINX_VIVADO=${TA_PATH}/Vivado/2022.2 source ${XILINX_VITIS}/settings64.sh