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 ('4f9bf6b4f2d3ac4a5a5a08c604d67b9a', -1, 1715105104, 1715105104, '12dc01ef', -9, 0, 0)

Line : 189
File : sessions.php