Error al intentar examinar el directorio «/var/www/html/facturacion.wowperu.pe/html/wowperu-gc-facturacion/storage/app/public/signed»

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 5.21.5

Error message:
Error al intentar examinar el directorio «/var/www/html/facturacion.wowperu.pe/html/wowperu-gc-facturacion/storage/app/public/signed».

Out of memory

Status: not_matched

The problem happens rarely. I cannot reproduce it.