phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 'session_user_id'

INSERT INTO sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2c816844f3e6d2ba104dcecaa021c1c7', -1, 1715040836, 1715040836, '12dc01ef', 8, 0, 0)

Line : 189
File : sessions.php