phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'd78cbb715589542aa96d24eede4461cb' 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 ('d78cbb715589542aa96d24eede4461cb', -1, 1790052012, 1790052012, 'd849d83f', 3, 0, 0)

Line : 187
File : sessions.php