Linux puskom-ProLiant-DL385-Gen10 5.4.0-150-generic #167~18.04.1-Ubuntu SMP Wed May 24 00:51:42 UTC 2023 x86_64

/usr/share/cups/templates/

//usr/share/cups/templates/error-op.tmpl

<H2 CLASS="title">{?title} {?printer_name} Error</H2> <P>Error:</P> <BLOCKQUOTE>Unknown operation "{op}"!</BLOCKQUOTE>