mrcnm.model报错，怎么解决？

Question

mrcnm.model报错：module 'keras.engine' has no attribute 'Layer'

我尝试过运行MatterPort/MaskRCNN代码，但报错：

----> 6 from mrcnn.model import MaskRCNN

/usr/local/lib/python3.7/dist-packages/mrcnn/model.py in <module>()
    253 
    254 
--> 255 class ProposalLayer(KE.Layer):
    256     """Receives anchor scores and selects a subset to pass as proposals
    257     to the second stage. Filtering is done based on anchor scores and

AttributeError: module 'keras.engine' has no attribute 'Layer'

有大佬懂这个情况是怎么回事吗？