Display list empty after 4.1 -> 4.2 upgrade

hi to all after upgrading dor 4.1 to 4.2 all display in list disappeared. i did use docker for install i am super admin, any ideas? all other thing on db seems fine, players is correctly connected and starts

@Ilios_Cipriani If you have any of your displays with a “web key serial” or “teamviewer serial” setted on, you must remove it (probably in you database).

its a bug that will be corrected in the next release:

thank you for your answer, but no, i do not have any serial in may displays