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 ('f13ab49a4f87a9db36c3d4de2c3fcfdc', -1, 1713559756, 1713559756, '12e19520', -10, 0, 0)

Line : 187
File : sessions.php