Use modemManager without udev

[Brian Chou]

Hi teams,

    I want use *"mmcli --report-kernel-event " *to access the modem, but
the error occur as follow:

root at NVTEVM:~$ mmcli
--report-kernel-event="action=add,subsystem=tty,name=ttyUSB
0"
ModemManager[601]: <debug> [1621557548.457821] [base-manager] kernel event
reported:
ModemManager[601]: <debug> [1621557548.457821] [base-manager] kernel event
reported:
ModemManager[601]: <debug> [1621557548.458234] [base-manager]   action:
 add
ModemManager[601]: <debug> [1621557548.458234] [base-manager]   action:
 add
ModemManager[601]: <debug> [1621557548.458467] [base-manager]   subsystem:
tty
ModemManager[601]: <debug> [1621557548.458467] [base-manager]   subsystem:
tty
ModemManager[601]: <debug> [1621557548.458790] [base-manager]   name:
 ttyUSB0
ModemManager[601]: <debug> [1621557548.458790] [base-manager]   name:
 ttyUSB0
ModemManager[601]: <debug> [1621557548.459218] [base-manager]   uid:
n/a
ModemManager[601]: <debug> [1621557548.459218] [base-manager]   uid:
n/a


*ModemManager[601]: <warn>  [1621557548.499209] [base-manager] couldn't
handle kernel event: No rule files found in
'/lib/udev/rules.d'ModemManager[601]: <warn>  [1621557548.499209]
[base-manager] couldn't handle kernel event: No rule files found in
'/lib/udev/rules.d'error: couldn't report kernel event:
'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Failed: No rule files
found in '/lib/udev/rules.d''*

Is it necessary to install the udev library ?
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