Camera board • libcamera-hello not working

Code:

pi@pi-test:~ $ libcamera-hello --list-camerasAvailable cameras-----------------0 : ov5647 [2592x1944 10-bit GBRG] (/base/soc/i2c0mux/i2c@1/ov5647@36)    Modes: 'SGBRG10_CSI2P' : 640x480 [58.92 fps - (16, 0)/2560x1920 crop]                             1296x972 [43.25 fps - (0, 0)/2592x1944 crop]                             1920x1080 [30.62 fps - (348, 434)/1928x1080 crop]                             2592x1944 [15.63 fps - (0, 0)/2592x1944 crop]

Code:

pi@pi-test:~ $ libcamera-hello[3:10:25.186209180] [6780]  INFO Camera camera_manager.cpp:313 libcamera v0.3.0+65-6ddd79b5[3:10:25.287621590] [6783]  WARN RPiSdn sdn.cpp:40 Using legacy SDN tuning - please consider moving SDN inside rpi.denoise[3:10:25.293248497] [6783]  INFO RPI vc4.cpp:446 Registered camera /base/soc/i2c0mux/i2c@1/ov5647@36 to Unicam device /dev/media2 and ISP device /dev/media0[3:10:25.293473028] [6783]  INFO RPI pipeline_base.cpp:1104 Using configuration file '/usr/share/libcamera/pipeline/rpi/vc4/rpi_apps.yaml'Made X/EGL preview windowMode selection for 1296:972:12:P    SGBRG10_CSI2P,640x480/0 - Score: 3296    SGBRG10_CSI2P,1296x972/0 - Score: 1000    SGBRG10_CSI2P,1920x1080/0 - Score: 1349.67    SGBRG10_CSI2P,2592x1944/0 - Score: 1567Stream configuration adjusted[3:10:26.482554174] [6780]  INFO Camera camera.cpp:1183 configuring streams: (0) 1296x972-YUV420 (1) 1296x972-SGBRG10_CSI2P[3:10:26.483305890] [6783]  INFO RPI vc4.cpp:621 Sensor: /base/soc/i2c0mux/i2c@1/ov5647@36 - Selected sensor format: 1296x972-SGBRG10_1X10 - Selected unicam format: 1296x972-pGAA[3:10:27.616156392] [6783]  WARN V4L2 v4l2_videodevice.cpp:2007 /dev/video0[13:cap]: Dequeue timer of 1000000.00us has expired![3:10:27.616394152] [6783] ERROR RPI pipeline_base.cpp:1336 Camera frontend has timed out![3:10:27.616455246] [6783] ERROR RPI pipeline_base.cpp:1337 Please check that your camera sensor connector is attached securely.[3:10:27.616516235] [6783] ERROR RPI pipeline_base.cpp:1338 Alternatively, try another cable and/or sensor.ERROR: Device timeout detected, attempting a restart!!!