Suppress error message and do not wait for keystroke

[Christoph Pleger]

Hello,

intentionally, I use the search command to search for files that are
not necessarily present, like this:

if search --file --set root /EFI/debian/grubx64.efi; then
          chainloader ($root)/EFI/debian/grubx64.efi
elif search --file --set root /EFI/ubuntu/grubx64.efi; then
          chainloader ($root)/EFI/ubuntu/grubx64.efi
elif search --file --set root /EFI/Microsoft/Boot/bootmgfw.efi; then
          chainloader ($root)/EFI/Microsoft/Boot/bootmgfw.efi
else
          echo "No usable bootloader file found, press <Enter> to
reboot"
          read
fi

Unfortunately, when a file is not found, an error message appears and a
keystroke is expected. Is it somehow possible to suppress the error
message and not wait for a key to be pressed?

Regards
  Christoph