Warning: Undefined variable $efile in /usr/local/www/nginx/wx/Images/mksvg.php on line 197

Fatal error: Uncaught TypeError: fwrite(): Argument #1 ($stream) must be of type resource, null given in /usr/local/www/nginx/wx/Images/mksvg.php:197 Stack trace: #0 /usr/local/www/nginx/wx/Images/mksvg.php(197): fwrite(NULL, '2021-01-01:00:5...') #1 {main} thrown in /usr/local/www/nginx/wx/Images/mksvg.php on line 197