PHP error while generating sitemap on online generator

[cutterax]

Tried to submit a site for xml sitemap creation but got the error below:

Links depth: 1
Current page:
Pages scanned: 1 (0.0 KB)
Added in sitemap: 0
Pages left: 0
Time passed: 0:01
Time left: 0:00

Completed

Total pages indexed: 0
Creating HTML sitemap...
Warning: ksort() expects parameter 1 to be array, null given in /home/xmlsites/public_html/pages/class.html-creator.inc.php on line 57

Warning: Invalid argument supplied for foreach() in /home/xmlsites/public_html/pages/class.html-creator.inc.php on line 59

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[XML-Sitemaps Support]

Hello,

all your pages are excluded with your robots.txt file. You can use our search engine bot simulator to diagnose these issues: https://www.xml-sitemaps.com/se-bot-simulator.html?op=se-bot-simulator&go=1&pageurl=http%3A%2F%2Fwww.pardesignlab.net%2Fglobules%2F&se=googlebot&submit=Start