phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a88a2d75dd5d5a5d02df917195b8d9d9' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('a88a2d75dd5d5a5d02df917195b8d9d9', -1, 1773431384, 1773431384, 'd849d8df', -9, 0)

Line : 180
File : /www/includes/sessions.php