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 ('1b9d0f620cda0b07e683bac4983cfd1f', -1, 1752878048, 1752878048, '54ccfc03', 5, 0, 0)

Line : 187
File : sessions.php