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 ('7a1b77a16b4e85cee7d6730c03a11692', -1, 1730419808, 1730419808, '12771317', -2, 0, 0)

Line : 195
File : sessions.php