phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'acca11f29e77a295a3526ac8bbb77ab4' 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 ('acca11f29e77a295a3526ac8bbb77ab4', -1, 1784302349, 1784302349, 'd849d8f9', -9, 0, 0)

Line : 187
File : sessions.php