AttributeError: 'Xlnk' object has no attribute 'bufmap'

[hopesala]

Successfully uninstalled pynq-2.5.1
Successfully installed pynq-2.5.3
(base) cao@cao-OMEN-by-HP-Desktop-PC-880-p0xx:/media/cao/SkyNet-master/FPGA/Deploy$ sudo python3 SkyNet.py

**** Running SkyNet
Traceback (most recent call last):
File "SkyNet.py", line 20, in
xlnk = Xlnk()
File "/usr/local/lib/python3.8/dist-packages/pynq/xlnk.py", line 136, in init
Xlnk._open_library(Xlnk.libxlnk_path)
File "/usr/local/lib/python3.8/dist-packages/pynq/xlnk.py", line 122, in _open_library
cls.libxlnk = cls.ffi.dlopen(path)
File "/usr/local/lib/python3.8/dist-packages/cffi/api.py", line 150, in dlopen
lib, function_cache = _make_ffi_library(self, name, flags)
File "/usr/local/lib/python3.8/dist-packages/cffi/api.py", line 832, in _make_ffi_library
backendlib = _load_backend_lib(backend, libname, flags)
File "/usr/local/lib/python3.8/dist-packages/cffi/api.py", line 827, in _load_backend_lib
raise OSError(msg)
OSError: cannot load library '/usr/lib/libcma.so': /usr/lib/libcma.so: cannot open shared object file: No such file or directory. Additionally, ctypes.util.find_library() did not manage to locate a library called '/usr/lib/libcma.so'
Exception ignored in: <function Xlnk.del at 0x7f7df96fc700>
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/pynq/xlnk.py", line 150, in del
AttributeError: 'Xlnk' object has no attribute 'bufmap'

[hopesala]

Additionally, ctypes.util.find_library() did not manage to locate a library called '/usr/lib/libcma.so'
libcma.so, how to have it installed