Hey there,
I just wanted to confirm this behavior. The PHP logging produces this error when uploading a larger file (I haven’t tried to confirm the specific file size boundary, but I’ll take chrislan21’s word for it):
[31-Oct-2017 17:08:53 UTC] PHP Warning: fclose(): supplied resource is not a valid stream resource in /var/www/html/wp-content/plugins/ilab-media-tools/classes/Cloud/Storage/Driver/S3/S3Storage.php on line 461
I hope that helps with the debugging. Let me know if you’d like some other information or if you’d like me to test a fix.