When you create fpgamanager or fpgamanager_dtg template apps using the petalinux-create
command, ensure to enable FPGA Manager. Not enabling FPGA
Manager could cause issues in loading the dtbo and bin files on target.
petalinux-create -t apps --template fpgamanager_dtg -n gpio --enable --srcuri "<path>/gpio.xsa <path>/shell.json"
(or)
petalinux-create -t apps --template fpgamanager -n gpio --enable --srcuri "<path>/pl.dtsi <path>/system.bit <path>/shell.json"
You can find the dtbo and bin files of the generated base and template applications in /lib/firmware/xilinx/