if configure uart0 like below ,no error ,but configure uart1 ,error

if uart = device_get_binding(DT_LABEL(DT_NODELABEL(uart0))); nrf5340dk_nrf5340_cpuapp.overlay edit like below:
&uart0{
compatible = "nordic,nrf-uarte";
status = "okay";
tx-pin = <33>;
rx-pin = <32>;
rts-pin = <0xFFFFFFFF>;
cts-pin = <0xFFFFFFFF>;
};
build solutin can pass and no error