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 ('0a2a2144e14094661b6006257d761ea8', -1, 1715104247, 1715104247, '0311a2f7', -8, 0, 0)

Line : 189
File : sessions.php