phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'b51e1d186515dc66f7f645b1bb39d382' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in) VALUES ('b51e1d186515dc66f7f645b1bb39d382', -1, 1772047248, 1772047248, 'd849d8b4', -10, 0)

Line : 180
File : /www/includes/sessions.php