I noticed that my PHP error log is full of lines like this...
[12-Dec-2021 10:04:18 US/Central] PHP Warning: getimagesize(/images/2021/02/06/bg01.jpg): failed to open stream: No such file or directory in D:\WWW\Joomla\components\com_sppagebuilder\parser\addons.php on line 64
Looking at addons.php, line 64 says...
$dimension = \getimagesize($src);
The real path to the image is...
D:/WWW/Joomla/images/2021/02/06/bg01.jpg
This is where SP Page Builder put it when uploaded through the SP Page Builder interface and it displays when viewing the webpage.
Any ideas how to prevent this error in the error log?