Notice messages under upload pdf files to media library

Hello!

I noticed today that the following message appears when uploading a PDF files to the media library:

Notice: Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 960

Notice: Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 961
223

Also i see a similar notice, when i running wp-cli to regenerate thumbnail:

wp media regenerate
...
PHP Notice:  Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 960
Notice: Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 960
PHP Notice:  Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 961
Notice: Undefined index: file in /www/wp-test.svgc.ru/wp-content/plugins/organize-media-folder/lib/class-organizemediafolder.php on line 961

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