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 ('9a57a5caae7fadd83f15b7e0201b94b3', -1, 1714613138, 1714613138, '0391082a', -9, 0)

Line : 158
File : sessions.php