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 ('83b5f9e6d2d988e2dd473d3c2815e63d', -1, 1737440746, 1737440746, '12e334c8', 10, 0, 0)

Line : 187
File : sessions.php