Python AutofocusTest.py crash "Segmentation fault"

Hi,
libcamera-still -o test.jpg --autofocus
Works OK - even autofocus - amazing!
libcamera-still --list-cameras

0 : ov5647 [2592x1944] (/base/soc/i2c0mux/[email protected]/[email protected])
    Modes: 'SGBRG10_CSI2P' : 640x480 1296x972 1920x1080 2592x1944

Seems ok to me :wink:
But Python
Trying understand Motorized Focus Camera - Arducam
Installed some fancy “things”
RaspberryPi/Motorized_Focus_Camera/python
python AutofocusTest.py
result

[69:58:34.277818387] [28538]  WARN IPAManager ipa_manager.cpp:149 No IPA found in '/usr/local/lib/arm-linux-gnueabihf/libcamera'
[69:58:34.282027709] [28538]  INFO Camera camera_manager.cpp:293 libcamera v0.0.0
Segmentation fault

Another test:
test.py

import libcamera
cam = libcamera.libcamera()
a = libcamera.PixelFormat.MJPEG
c = cam.initCamera(640, 480, a)

result:

[70:02:39.464921433] [13301]  WARN IPAManager ipa_manager.cpp:149 No IPA found in '/usr/local/lib/arm-linux-gnueabihf/libcamera'
[70:02:39.485416449] [13301]  INFO Camera camera_manager.cpp:293 libcamera v0.0.0
Segmentation fault

Can anybody say what is missing where :frowning: