hi all can any one help with this error on my FTP

Fatal error
: Uncaught Error: Call to undefined function set_magic_quotes_runtime() in /home/clients/21143e8b83f7568da4039b68d3d6faa4/webplus/index.php:122 Stack trace: #0 {main} thrown in
/home/clients/21143e8b83f7568da4039b68d3d6faa4/webplus/index.php
on line
122

will be appreciated any tips how can solve this error
thanks