phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '957217e0ef0f7b8f2b9d69a57f6f8263' 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 ('957217e0ef0f7b8f2b9d69a57f6f8263', -1, 1769990995, 1769990995, 'd849d837', 2, 0, 0)

Line : 187
File : sessions.php