core24 - no matching signatures found

[DjDiabolik]

diabolik@NUC-Ubuntu:~$ sudo snap list --all
Name                       Version             Rev    Tracking         Publisher   Notes
bare                       1.0                 5      latest/stable    canonical✓  base
canonical-livepatch        10.10.3             316    latest/stable    canonical✓  -
canonical-livepatch        10.9.0              286    latest/stable    canonical✓  disabled
core                       16-2.61.4-20240607  17200  latest/stable    canonical✓  core,disabled
core                       16-2.61.4-20241002  17210  latest/stable    canonical✓  core
core18                     20240920            2846   latest/stable    canonical✓  base,disabled
core18                     20250123            2855   latest/stable    canonical✓  base
core20                     20250407            2571   latest/stable    canonical✓  base,disabled
core20                     20250429            2582   latest/stable    canonical✓  base
core22                     20250315            1908   latest/stable    canonical✓  base,disabled
core22                     20250408            1963   latest/stable    canonical✓  base
core24                     20250318            888    latest/beta      canonical✓  base
firefox                    139.0-2             6227   latest/stable    mozilla✓    disabled
firefox                    139.0.1-1           6259   latest/stable    mozilla✓    -
gnome-3-38-2004            0+git.efb213a       143    latest/stable/…  canonical✓  -
gnome-3-38-2004            0+git.6f39565       140    latest/stable/…  canonical✓  disabled
gnome-42-2204              0+git.38ea591       202    latest/stable    canonical✓  -
gnome-42-2204              0+git.510a601       176    latest/stable    canonical✓  disabled
gtk-common-themes          0.1-81-g442e511     1535   latest/stable/…  canonical✓  -
mediainfo                  25.03               40     latest/stable    mediaarea   disabled
mediainfo                  25.04               41     latest/stable    mediaarea   -
snap-store                 0+git.7a3a49a6      1248   latest/stable/…  canonical✓  disabled
snap-store                 0+git.90575829      1270   latest/stable/…  canonical✓  -
snapd                      2.67.1              23771  latest/stable    canonical✓  snapd,disabled
snapd                      2.68.4              24505  latest/stable    canonical✓  snapd
snapd-desktop-integration  0.9                 247    latest/stable/…  canonical✓  disabled
snapd-desktop-integration  0.9                 253    latest/stable/…  canonical✓  -
thunderbird                128.11.0esr-1       735    latest/stable    canonical✓  -
thunderbird                128.10.2esr-1       734    latest/stable    canonical✓  disabled

Look at core24... i have switch to latest beta. if i try "sudo snap refresh" it's version 1066 installed!

The current stable it's 988 but ever fail install!! Look:

diabolik@NUC-Ubuntu:~$ sudo snap refresh --stable core24
error: cannot perform the following tasks:
- Fetch and check assertions for snap "core24" (988) (cannot verify snap "core24", no matching signatures found)

I'm current on Ubuntu 24.04.2 LTS... i need to do to fix this issue ?