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 ('5bd6d087f3e4cbb8c5a2744f396dbe5f', -1, 1766203171, 1766203171, '54ccfc03', 2, 0, 0)

Line : 187
File : sessions.php