phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '028554a0493a58e2f39dc88cfafb8bef' 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) VALUES ('028554a0493a58e2f39dc88cfafb8bef', -1, 1771538261, 1771538261, 'd849d813', 6, 0, 0)

Line : 187
File : sessions.php