Fatal error: Uncaught TypeError: imagesx(): Argument #1 ($image) must be of type GdImage

Hello, I got the following fatal err when converting some images with SimpleImage->bestFit().

Fatal error: Uncaught TypeError: imagesx(): Argument #1 ($image) must be of type GdImage, null given in D:\php\hvmenu\vendor\SimpleImage\SimpleImage.php on line 659 TypeError: imagesx(): Argument #1 ($image) must be of type GdImage, null given in D:\php\hvmenu\vendor\SimpleImage\SimpleImage.php on line 659 Call Stack: 0.0002 368272 1. {main}()

... claviska\SimpleImage->bestFit($maxWidth = 1920, $maxHeight = 1080)
... claviska\SimpleImage->getWidth()
SimpleImage.php:748 imagesx($image = NULL)
SimpleImage.php:659

Start in SimpleImage.php at the imagesx() call reported on line 659 and the getWidth() call on line 748, then reproduce the failure through bestFit(). Trace why the image value is null for the affected input and define the expected handling; done means the conversion no longer produces this fatal TypeError.

Written by the indexing model from the issue text.