phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '07aa5c75080d50ba30765211d68e7564' for key 'phpbb2_sessions.PRIMARY'

INSERT INTO phpbb2_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('07aa5c75080d50ba30765211d68e7564', -1, 1776970829, 1776970829, 'd849d80d', 0, 0, 0)

Line : 187
File : sessions.php