**Version:** - listmonk: [5.0.0] - OS: [Docker on Debian 12] **Description of the bug and steps to reproduce:** 1. Open one of lists (any) 1. Select all list members (click checkbox next to E-mail header). 1. Click "Select all 2808" link. 1. Click "Manage lists" links. 1. Select the other list. Selct Add radio button. 1. Click "Save" 1. The error "Invalid fields: query" appears, and all list members are not added to the other list. The error does not appear, when I select one member or all members on single page (20 members). This error started to appear after upgrading to 5.0.0 from 4.5.0. Previously everything worked fine. **Screenshots:** 