phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a1e5a1c8d2647e8772b5cef410c550e2' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('a1e5a1c8d2647e8772b5cef410c550e2', -1, 1771991840, 1771991840, 'd849d8b4', -9, 0)

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