phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4aaf14fd7847f0e066fb15e1e200cf2a' 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 ('4aaf14fd7847f0e066fb15e1e200cf2a', -1, 1765194140, 1765194140, 'd849d8bc', -4, 0, 0)

Line : 187
File : sessions.php