Fatal error: Uncaught TypeError: SecurityUtils::encodeHTML(): Argument #1 ($input) must be of type string, null given, called in /home/w15833/web/my.nes-ev.de/adm_program/system/bootstrap/function.php on line 396 and defined in /home/w15833/web/my.nes-ev.de/adm_program/system/classes/SecurityUtils.php:19
Stack trace:
#0 /home/w15833/web/my.nes-ev.de/adm_program/system/bootstrap/function.php(396): SecurityUtils::encodeHTML(NULL)
#1 /home/w15833/web/my.nes-ev.de/adm_program/modules/documents-files/get_file.php(19): admFuncVariableIsValid(Array, 'file_uuid', 'string', Array)
#2 {main}
  thrown in /home/w15833/web/my.nes-ev.de/adm_program/system/classes/SecurityUtils.php on line 19