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 ('7dab1073baa5b4bc36bf61a21d3b2c41', -1, 1713578316, 1713578316, '0316f0cd', 2, 0, 0)

Line : 187
File : sessions.php