Traceback (most recent call last):


 "calibre_plugins.dedrm.kindlekey", line 1540, in getDBfrom


cleartext = UnprotectHeaderData(encryptedValue)


 "calibre_plugins.dedrm.kindlekey", line 1408, in UnprotectHeaderData

crp = LibCrypto()
TypeError: 'NoneType' object is not callable

**ERROR:pymodbus.server.sync:Socket exception occurred Traceback (most recent call last):


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/server/sync.py", line 202, in handle

single=single)


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/framer/socket_framer.py", line 153, in processIncomingPacket

self._process(callback)


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/framer/socket_framer.py", line 181, in _process

callback(result)
# defer or push to a thread?


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/server/sync.py", line 86, in execute

self.send(response)


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/server/sync.py", line 227, in send

pdu = self.framer.buildPacket(message)


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/framer/socket_framer.py", line 206, in buildPacket

data = message.encode()


 "/home/pi/.local/lib/python3.7/site-packages/pymodbus/register_read_message.py", line 77, in encode

result = int2byte(len(self.registers) * 2)
TypeError: object of type 'ModbusIOException' has no len()**
