Can't see last error popup

Pydio core 8.2.5, Ubuntu 20.04

I’m now using PHP 7.1 as 7.2 is not fully supported. Indexing is still crashing out but this time with a file not found exception. Indexing a fragile! Unfortunately the popup is on the display for such a short time that it is impossible to see what file is

I highly recommend to use elasticsearch for index engine. It’s more stable than default lucence.

Yes, elasticsearch goes on further but still the same issue. An error popup followed by an error box that does stay on the screen but doesn’t actually say anything meaningful