make the error message more human readable (#63)
make the error message more human readable (#63)

Signed-off-by: Ce Gao <4719bad8fcd80cf8a4944f8e20dc80641feb4eca@outlook.com>
gaocegege/cyclone,zjj2wry/cyclone,constssk/cyclone,caicloud/cyclone,zjj2wry/cyclone,caicloud/cyclone,constssk/cyclone,gaocegege/cyclone,gaocegege/cyclone,zjj2wry/cyclone,caicloud/cyclone,zjj2wry/cyclone,constssk/cyclone,constssk/cyclone,caicloud/cyclone,gaocegege/cyclone