phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6fa7b8f45f87edf78eebc0cb845b3049' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('6fa7b8f45f87edf78eebc0cb845b3049', -1, 1766377864, 1766377864, '00000000', 30, 0, 0)

Line : 187
File : sessions.php