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 ('cc1b4be96cd0f07d010587a865cb0fc8', -1, 1714009002, 1714009002, '12bed986', -11, 0, 0)

Line : 187
File : sessions.php