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 ('fb8f2784589a876bab6c9c421330bfba', -1, 1713491655, 1713491655, '0311a510', 2, 0, 0)

Line : 187
File : sessions.php