Indeed, I forget the input!
The input is as follows:
phase = 'test'
size = 512
m2det_config = dict(
    backbone='vgg16',
    net_family='vgg',  
    base_out=[22, 34],
    planes=256,
    num_levels=8,
    num_scales=6,
    sfam=False,
    smooth=True,
    num_classes=3,  
)