Encode Explorer

Fatal error: Uncaught TypeError: round(): Argument #1 ($num) must be of type int|float, string given in /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php:2875 Stack trace: #0 /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php(2875): round('', 2) #1 /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php(3238): EncodeExplorer->formatSize('') #2 /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php(2965): EncodeExplorer->outputHtml() #3 /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php(3367): EncodeExplorer->run(Object(Location)) #4 {main} thrown in /data01/virt5442/domeenid/www.siineiolekala.net/encode/explorer/index.php on line 2875
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dir ..
txt testfile.txt