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 ('d008d091b75bf2049db16c5aa61365fc', -1, 1713576128, 1713576128, '039269c2', -4, 0, 0)

Line : 187
File : sessions.php