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 ('245dc46a161c67a17c00c6aba4e51338', -1, 1713481899, 1713481899, '1276019e', -8, 0, 0)

Line : 187
File : sessions.php