Get error when compiling 'hello_world.cl'

when I use this command to compile an OpenCL kernel: c:\intelfpga_pro\16.1\hld\board\de5a_net_i2\tests\hello_world> aoc -v --board de5a_net_i2 .\device\hello_world.cl -o .\bin\hello_world.aocx --...