phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('50ef53c15a1adb9a1407c488a44c836e', -1, 1709170997, 1709170997, '54ccfc03', 0, 0, 0)

Line : 187
File : sessions.php