phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '21855bb41a6951d2ff26782ead316e3d' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin, priv_session_id) VALUES ('21855bb41a6951d2ff26782ead316e3d', -1, 1714402479, 1714402479, '6ca2d8e7', -7, 0, 0, '0248b355b42d9b47d1b11c0270960aef')

Line : 187
File : sessions.php