electrumx_rpc error query

Error with command electrumx_rpc -p 8000 query --limit 5 xxxxxxxxxxxxxxx

Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: File "/usr/local/lib/python3.7/dist-packages/electrumx/server/session.py", line 552, in rpc_query
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: hashX = arg_to_hashX(arg)
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: File "/usr/local/lib/python3.7/dist-packages/electrumx/server/session.py", line 535, in arg_to_hashX
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: hashX = coin.address_to_hashX(arg)
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: File "/usr/local/lib/python3.7/dist-packages/electrumx/lib/coins.py", line 185, in address_to_hashX
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: return cls.hashX_from_script(cls.pay_to_address_script(address))
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: File "/usr/local/lib/python3.7/dist-packages/electrumx/lib/coins.py", line 214, in pay_to_address_script
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: raise CoinError(f'invalid address: {address}')
Apr 17 07:56:46 iZd7ocw3tu8tq6mw1gjvvwZ electrumx_server[21442]: electrumx.lib.coins.CoinError: invalid address: xxxxx

Start with server/session.py at rpc_query and arg_to_hashX, then follow the address conversion in lib/coins.py through address_to_hashX and pay_to_address_script. Reproduce the electrumx_rpc query with the reported argument and determine the expected handling for the invalid-address error; done means the intended behavior is verified by a focused test or a clearly documented diagnosis.