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 ('f7e3665de2ec0b6568b8e519748ac86f', -1, 1713942494, 1713942494, '0395d620', -11, 0, 0)

Line : 187
File : sessions.php