Failed to open /dev/EtherCAT0: Permission denied

Starting LinuxCNC...
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
Found file(REL): ./gc_sim_1ax_cl.hal
creating ladder-state
Failed to open /dev/EtherCAT0: Permission denied
LCEC: requesting master 0 (index 0) failed
LCEC: failure, clearing config
LCEC: exiting
LCEC: returning -EINVAL
lcec: rtapi_app_main: Invalid argument (-22)
./gc_sim_1ax_cl.hal:17: waitpid failed /usr/bin/rtapi_app lcec
./gc_sim_1ax_cl.hal:17: /usr/bin/rtapi_app exited without becoming ready
./gc_sim_1ax_cl.hal:17: insmod for lcec failed, returned -1
Shutting down and cleaning up LinuxCNC...
Note: Using POSIX realtime

Starting LinuxCNC...
linuxcnc TPMOD=tpmod HOMEMOD=homemod EMCMOT=motmod
Note: Using POSIX realtime
Found file(REL): ./gc_sim_1ax_cl.hal
creating ladder-state

(classicladder:13667): dbind-WARNING **: 00:13:43.156: Couldn't connect to accessibility bus: Failed to connect to socket /root/.cache/at-spi/bus_0: Permission denied
task: machine: 'GC-SIM-CL'  version 'unknown'
note: MAXV     max: 1200.000 units/sec 72000.000 units/min
note: LJOG     max: 1200.000 units/sec 72000.000 units/min
note: LJOG default: 1000.000 units/sec 60000.000 units/min
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
USRMOT: ERROR: command timeout
emcMotionInit: emcTrajInit failed
waiting for s.joints<0>, s.kinematics_type<0>
waiting for s.joints<0>, s.kinematics_type<0>
Waiting for component 'inihal' to become ready...........USRMOT: ERROR: command timeout
emcMotionInit: emcTrajInit failed
waiting for s.joints<0>, s.kinematics_type<0>
....................USRMOT: ERROR: command timeout
emcMotionInit: emcTrajInit failed
.....A configuration error is preventing LinuxCNC from starting.
More information may be available when running from a terminal.
.Shutting down and cleaning up LinuxCNC...
.............USRMOT: ERROR: command timeout
emcMotionInit: emcTrajInit failed

(classicladder:14034): dbind-WARNING **: 00:22:21.274: Couldn't connect to accessibility bus: Failed to connect to socket /root/.cache/at-spi/bus_0: Permission denied
Found file(REL): ./core_sim.hal
trivkins: already exists
./core_sim.hal:5: waitpid failed /usr/bin/rtapi_app trivkins
./core_sim.hal:5: /usr/bin/rtapi_app exited without becoming ready
./core_sim.hal:5: insmod for trivkins failed, returned -1
Shutting down and cleaning up LinuxCNC...
ERROR CLASSICLADDER-   Error initializing classicladder user module.
Note: Using POSIX realtime

loadrt ddt names=ddt_x,ddt_xv
# load additional blocks
loadrt hypot names=vel_xy

# add motion controller functions to servo thread
addf motion-command-handler servo-thread
addf motion-controller servo-thread
# link the differentiator functions into the code
addf ddt_x servo-thread
addf ddt_xv servo-thread


# create HAL signals for position commands from motion module
# loop position commands back to motion module feedback
net Xpos joint.0.motor-pos-cmd => joint.0.motor-pos-fb ddt_x.in


# send the position commands thru differentiators to
# generate velocity and accel signals
net Xvel ddt_x.out => ddt_xv.in vel_xy.in0
net Xacc <= ddt_xv.out