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If the issue could be reproduced easily, the devs would be aware of it. I can't promise I report the issue. The only part worth sharing was to replace NPY_ARRAY_UPDATEIFCOPY with NPY_ARRAY_WRITEBACKIFCOPY in sources/shiboken6/libshiboken/sbknumpyarrayconverter.cpp to satisfy the newest numpy. As for the rest, I have only three lines of the error message, which I've provided earlier.