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 ('3430d2a6c0aef2943212bcb0d8d51194', -1, 1714675878, 1714675878, '03154c00', -10, 0, 0)

Line : 187
File : sessions.php