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) VALUES ('a10fd08dc09aaeb2c24d3777ed6b382d', -1, 1714361714, 1714361714, '030fe571', -7, 0)

Line : 158
File : sessions.php