phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '9a64973e4b1075271c0664d229863cd7' 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 ('9a64973e4b1075271c0664d229863cd7', -1, 1765152409, 1765152409, 'd849d8bc', -4, 0, 0)

Line : 187
File : sessions.php