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 ('cafb2f90d279660dbf4b12025a7785d2', -1, 1747257705, 1747257705, '038740c8', -8, 0, 0)

Line : 189
File : sessions.php