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 ('121344e5f1a91e68ce809f5e1f3d3c01', -1, 1714677078, 1714677078, '12bed986', 14, 0)

Line : 158
File : sessions.php