phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2d6b5f06dcb862b1845d4d7a7f88a665', -1, 1713500500, 1713500500, '03156422', -1, 0, 0)

Line : 187
File : sessions.php