phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21f78d0c1e1a4806ddc55c43578d55f7' for key 'PRIMARY'

INSERT INTO sub_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('21f78d0c1e1a4806ddc55c43578d55f7', -1, 1715003376, 1715003376, '03907ce8', 0, 0, 0)

Line : 187
File : sessions.php