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 ('01135bf96b03c576896a9b4eaf05b809', -1, 1714006539, 1714006539, '12bc2cdf', -11, 0, 0)

Line : 187
File : sessions.php