Why i get error "Matrix dimensions must agree." when i input non-face images?

Hello , i'm now working with PCA to recognized face. When i choose a face image as test image, my porgram not error and going as I expected. But when i choose a non-face image as test image, i got this error
Why this is happen? And how can i fix this error?

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Diese Frage ist geschlossen.

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am 2 Aug. 2016

Geschlossen:

am 20 Aug. 2021

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