picamera2: raw.py ERROR

#!/usr/bin/python3

# Configure a raw stream and capture an image from it.
import time

from picamera2 import Picamera2, Preview

picam2 = Picamera2()
picam2.start_preview(Preview.QTGL)

preview_config = picam2.create_preview_configuration(raw={"size": picam2.sensor_resolution})
print(preview_config)
picam2.configure(preview_config)

picam2.start()
time.sleep(2)

raw = picam2.capture_array("raw")
print(raw.shape)
print(picam2.stream_configuration("raw"))

ERROR

[72:40:04.172678509] [7765]  INFO RPI raspberrypi.cpp:1374 Registered camera /base/soc/i2c0mux/i2c@1/imx477@1a to Unicam device /dev/media0 and ISP device /dev/media2
{'use_case': 'preview', 'transform': <libcamera.Transform 'identity'>, 'colour_space': <libcamera.ColorSpace 'sYCC'>, 'buffer_count': 4, 'main': {'format': 'XBGR8888', 'size': (640, 480)}, 'lores': None, 'raw': {'format': 'SBGGR12_CSI2P', 'size': (4056, 3040)}, 'controls': {'NoiseReductionMode': <NoiseReductionModeEnum.Minimal: 3>, 'FrameDurationLimits': (100, 83333)}, 'display': 'main', 'encode': 'main'}
[72:40:05.956939345] [7764]  INFO Camera camera.cpp:1035 configuring streams: (0) 640x480-XBGR8888 (1) 4056x3040-SBGGR12_CSI2P
[72:40:05.957404833] [7765]  INFO RPI raspberrypi.cpp:761 Sensor: /base/soc/i2c0mux/i2c@1/imx477@1a - Selected sensor format: 4056x3040-SBGGR12_1X12 - Selected unicam format: 4056x3040-pBCC
qt.qpa.xcb: QXcbConnection: XCB error: 148 (Unknown), sequence: 192, resource id: 0, major code: 140 (Unknown), minor code: 20
(3040, 6112)
{'format': 'SBGGR12_CSI2P', 'size': (4056, 3040), 'stride': 6112, 'framesize': 18580480}