phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1b9c3d55b9af530e2a55bf3725e0094d', -1, 1713988200, 1713988200, '03856dd3', -10, 0, 0)

Line : 187
File : sessions.php