Error when using gallery

When i try to upload an image to a folder i get this error.
 

PHP WARNING [2] A non-numeric value encountered in sources/images_cleanup_pipeline.php on line 545 (version: 10.0.16, PHP version: 7.2.7, URL: /cms/index.php?page=cms-galleries&type=_add&redirect=https%3A%2F%2Fdoenwenu.nl%2Findex.php%3Fpage%3Dgalleries%26type%3Dbrowse%26id%3Dweerfoto_s&uploading=1)

 
I follow Menu > gallery > album > add image 

Hello,

There is an issue on PHP 7.2+. Please try these 2 fixed files:

sources/global3.php:
https://raw.githubusercontent.com/ocproducts/composr/master/sources/global3.php

sources/images_cleanup_pipeline.php:
https://raw.githubusercontent.com/ocproducts/composr/master/sources/images_cleanup_pipeline.php

Thanks, it works. Great job!