phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '5dcf55fca7b0cd6cb95101a680f5e057' 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 ('5dcf55fca7b0cd6cb95101a680f5e057', -1, 1770231280, 1770231280, 'd849d83c', -9, 0, 0)

Line : 187
File : sessions.php