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 ('3aaf3a142709f521222a55abf8e58e7f', -1, 1711704742, 1711704742, '54ccfc03', -9, 0, 0)

Line : 187
File : sessions.php