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 ('59e4ec9cb88412555ee8a8721c013680', -1, 1713879148, 1713879148, '12dc9a29', -4, 0, 0)

Line : 187
File : sessions.php