phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '6a8bcf7c86ca600715323055c8d7df90' 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 ('6a8bcf7c86ca600715323055c8d7df90', -1, 1714626714, 1714626714, 'c0a80201', -4, 0, 0)

Line : 187
File : sessions.php