phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'de48a35549e6b502403a7369065e66fb' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('de48a35549e6b502403a7369065e66fb', -1, 1768710812, 1768710812, 'd849d838', 1, 0, 0)

Line : 187
File : sessions.php