NextCloudPi 1.15.0, NC16.0.3, Odroid HC2. Tested by uploading a 5GiB file through the web interface.

# uname -a
Linux nextcloudpi 4.14.127-odroidxu4 #61 SMP PREEMPT Mon Jul 1 20:41:09 CEST 2019 armv7l GNU/Linux

I know this was fixed by using chunking in NC13 but it is back now.

I can see the file being fully uploaded and then reconstructed in the destination folder (increasing size until full size).

Then the interface fails with this error and the file gets removed

NCP ticket

nextcloud/nextcloudpi#948