phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'ff7734e2a83ff9910054d5ae97ea0539' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('ff7734e2a83ff9910054d5ae97ea0539', -1, 1715890501, 1715890501, '0387c71b', -4, 0, 0)

Line : 187
File : sessions.php