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 ('210733baea5cd58a7385148673a0d6ee', -1, 1730428566, 1730428566, '038e2838', -1, 0, 0)

Line : 195
File : sessions.php