PHP Fatal error: Uncaught Error: Call to undefined function FileRun\Files\fnmatch() in /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php:158

Happy New Year to all.

I have a problem installing filerun on an asustor NAS. I am doing the installation on the NAS web server, not through docker. After installation I received this message:

The log record is as follows:

[03-Jan-2023 14:36:10 UTC] PHP Fatal error: Uncaught Error: Call to undefined function FileRun\Files\fnmatch() in /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php:158
Stack trace:
#0 /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php(193): FileRun\Files\Utils::isExcludedName('ROOT')
#1 /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php(205): FileRun\Files\Utils::isValidName('ROOT')
#2 /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php(215): FileRun\Files\Utils::isValidFolderName('ROOT')
#3 /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Actions/Read/Prepare.php(119): FileRun\Files\Utils::isValidPath('/ROOT/HOME')
#4 /volume1/Web/filerun/system/modules/fileman/sections/get/php/includes/folder.php(5): FileRun\Files\Actions\Read\Prepare::prepare('/ROOT/HOME', 'folder')
#5 /volume1/Web/filerun/system/modules/fileman/sections/get/php/grid.php(53): unknown()
#6 /volume1/Web/filerun/index.php(183): unknown()
#7 {main}
thrown in /volume1/Web/filerun/system/classes/vendor/FileRun/Files/Utils.php on line 158

Please, someone who can give me a help, with some guidance?

Thanks in advance