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 ('31502437c108cb12f97edc8c89d63871', -1, 1752880700, 1752880700, '54ccfc03', -2, 0, 0)

Line : 187
File : sessions.php