phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a4908d9013967815a7e5a33b0488f777' 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 ('a4908d9013967815a7e5a33b0488f777', -1, 1754214289, 1754214289, 'd849d83e', -4, 0, 0)

Line : 215
File : sessions.php