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 ('08bcd5d6d8f13ae0d5d88e985185dbe6', -1, 1714311654, 1714311654, '0395e5fd', 12, 0)

Line : 158
File : sessions.php