AVIF export error

[allbutone]

XnConvert 1.100.1
os: macOS 14.1.2

converting a jpg to avif.
error massage:

/Users/vornamenachname/Desktop/bbb/test.jpg : loading
/Users/vornamenachname/Desktop/bbb/test.jpg 1920x1200x24 : loaded
/Users/vornamenachname/Desktop/bbb/test-Xn.avif : not a picture

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Saving error(s):
/Users/vornamenachname/Desktop/bbb/test-Xn.avif

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Input files: 1
Extracted pages: 1
New files: 1

Total Duration: 0 second(s)

[xnview]

yes known issue

[allbutone]

Is there any progress with the problem?