xsane acquire preview ok but fail to scan

on Ubuntu 21.04 I start xsane to scan on my HP deskjet 2630, acquire preview is ok but scan fails with a message: "Failed to start scanner: Document feeder out of documents." HP deskjet 2630 is a single flatbed, no document feeder and the scanned page is still on the scanner.

corrado@corrado-x7-hh-1201:~$ scanimage -L
device `escl:http://127.0.0.1:60001' is a HP DeskJet 2600 series [665032] (USB 1) flatbed scanner
device `hpaio:/usb/DeskJet_2600_series?serial=CN0569B27006PS' is a Hewlett-Packard DeskJet_2600_series all-in-one
corrado@corrado-x7-hh-1201:~$ apt policy xsane
xsane:
  Installed: 0.999-9ubuntu1
  Candidate: 0.999-9ubuntu1
  Version table:
 *** 0.999-9ubuntu1 500
        500 http://archive.ubuntu.com/ubuntu hirsute/universe amd64 Packages
        100 /var/lib/dpkg/status
corrado@corrado-x7-hh-1201:~$ inxi -Fx
System: Host: corrado-x7-hh-1201 Kernel: 5.8.0-25-generic x86_64 bits: 64 compiler: gcc
           v: 10.2.0 Desktop: GNOME 3.38.1 Distro: Ubuntu 21.04 (Hirsute Hippo)
Machine: Type: Desktop Mobo: ASRock model: H110M-G/M.2 serial: <superuser/root required>
           UEFI: American Megatrends v: P1.10 date: 05/11/2017
CPU: Info: Dual Core model: Intel Core i3-7100 bits: 64 type: MT MCP arch: Kaby Lake
           rev: 9 L2 cache: 3072 KiB
           flags: avx avx2 lm nx pae sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx bogomips: 31199
           Speed: 800 MHz min/max: 800/3900 MHz Core speeds (MHz): 1: 800 2: 800 3: 800
           4: 800
Graphics: Device-1: Intel HD Graphics 630 vendor: ASRock driver: i915 v: kernel
           bus ID: 00:02.0
           Device-2: ARC USB 2.0 Camera type: USB driver: uvcvideo bus ID: 1-8:6
           Device-3: HD USB Camera HD USB Camera type: USB driver: uvcvideo bus ID: 3-1.1:3
           Display: x11 server: X.Org 1.20.9 driver: modesetting unloaded: fbdev,vesa
           resolution: 1920x1080~60Hz
           OpenGL: renderer: Mesa Intel HD Graphics 630 (KBL GT2) v: 4.6 Mesa 20.2.2
           direct render: Yes
Audio: Device-1: Intel 100 Series/C230 Series Family HD Audio vendor: ASRock
           driver: snd_hda_intel v: kernel bus ID: 00:1f.3
           Device-2: Logitech QuickCam Pro 9000 type: USB driver: snd-usb-audio,uvcvideo
           bus ID: 1-2:3
           Sound Server: ALSA v: k5.8.0-25-generic
Network: Device-1: Intel Ethernet I219-V vendor: ASRock driver: e1000e v: 3.2.6-k
           port: f040 bus ID: 00:1f.6
           IF: enp0s31f6 state: up speed: 100 Mbps duplex: full mac: 70:85:c2:44:7b:86
Drives: Local Storage: total: 2.05 TiB used: 11.08 GiB (0.5%)
           ID-1: /dev/nvme0n1 vendor: Kingston model: SKC2000M8250G size: 232.89 GiB
           ID-2: /dev/sda vendor: Toshiba model: DT01ACA100 size: 931.51 GiB temp: 33 C
           ID-3: /dev/sdb vendor: Hitachi model: HDS721010CLA332 size: 931.51 GiB
           temp: 32 C
Partition: ID-1: / size: 31.25 GiB used: 11.07 GiB (35.4%) fs: ext4 dev: /dev/nvme0n1p7
Swap: ID-1: swap-1 type: partition size: 8.00 GiB used: 0 KiB (0.0%) dev: /dev/sda2
Sensors: System Temperatures: cpu: 44.0 C mobo: N/A
           Fan Speeds (RPM): N/A
Info: Processes: 235 Uptime: 1h 20m Memory: 7.48 GiB used: 1.79 GiB (24.0%)
           Init: systemd runlevel: 5 Compilers: gcc: 10.2.0 Packages: 2054 Shell: Bash
           v: 5.1.0-rc3 inxi: 3.1.09
corrado@corrado-x7-hh-1201:~$

ProblemType: Bug
DistroRelease: Ubuntu 21.04
Package: xsane 0.999-9ubuntu1
ProcVersionSignature: Ubuntu 5.8.0-25.26-generic 5.8.14
Uname: Linux 5.8.0-25-generic x86_64
ApportVersion: 2.20.11-0ubuntu55
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Mon Dec 7 16:33:21 2020
InstallationDate: Installed on 2020-12-01 (5 days ago)
InstallationMedia: Ubuntu 21.04 "Hirsute Hippo" - Alpha amd64 (20201201.2)
SourcePackage: xsane
UpgradeStatus: No upgrade log present (probably fresh install)