I confirm.Recently (January/February 2026), this error has been occurring very frequently.
It occurs regardless of the browser used, i.e., Chromium/Firefox-esr. Clearing the cache does not help. Regards. ========================================= Error 503 All backends failed or unhealthy All backends failed or unhealthy Error 54113 Details: cache-vie6341-VIE 1770533395 1041484514 Varnish cache server ===========================================

