nrf mesh compile error

how to slove it

1> Linking light_switch_proxy_server_nrf52832_xxAA_s132_6.0.0.elf
1> build/light_switch_proxy_server_nrf52832_xxAA_s132_6.0.0_Debug/obj/ses_nrf52840_Vectors.o: In function `_vectors':
1> (.vectors+0x0): multiple definition of `_vectors'
1> build/light_switch_proxy_server_nrf52832_xxAA_s132_6.0.0_Debug/obj/ses_startup_nrf52840.o:(.vectors+0x0): first defined here
1> D:/Program Files/ses/gcc/arm-none-eabi/bin/ld: warning: cannot find entry symbol Reset_Handler; defaulting to 0000000000026218
1> build/light_switch_proxy_server_nrf52832_xxAA_s132_6.0.0_Debug/obj/ses_startup_nrf52840.o: In function `_vectors':
1> (.vectors+0x4): undefined reference to `Reset_Handler'