phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '3b5f2ca12fed03d5a54224316ea37b1d' 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 ('3b5f2ca12fed03d5a54224316ea37b1d', -1, 1768487221, 1768487221, 'd849d868', -4, 0, 0)

Line : 187
File : sessions.php