fatal error problem in log in also

sir pls help me my condition is very bad my website is totally block due to fatal error ….

sir, i know if you guide me step by step i will do it …. its my confident i will do hard work for solving this situation plsss sir…

my web hosting company also not help me…. pls sir you only my aspect to solve this problem..

sir pls guide me step by step for FTP method i will wait for your reply ….pls sir plsss

here is my website https://lyricsglow.com/ plss sir tell me how i use ftp method to again login my wordpress account..