phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '879d5abe71945f0deea7d4f2f410b461' 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 ('879d5abe71945f0deea7d4f2f410b461', -1, 1768256738, 1768256738, '0aff0001', 33, 0, 0)

Line : 199
File : sessions.php