phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9cc497224fbe018b1e52c31c59ca480b' 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 ('9cc497224fbe018b1e52c31c59ca480b', -1, 1768401912, 1768401912, 'd849d861', 3, 0, 0)

Line : 187
File : sessions.php