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 ('442ca73d1fd427c3b144871b5cb1cf69', -1, 1711679533, 1711679533, '22e37091', -10, 0, 0)

Line : 187
File : sessions.php