I get this error on my checkout page of my online store https://xn--niodelaselva-bhb.com/.

Something happened: SOAP-ERROR: Parsing WSDL: Couldn’t load from ‘/home/customer/www/xn--niodelaselva-bhb.com/public_html’ : Document is empty

My clients are able to buy products without any further errors however some important code on my functions.php child-theme is not getting applied in the website. I suspect it has something to do with this error.
SOAP.wsdl_cache_enabled setting is set as “yes” on my hosting cpanel. I have a status report from woocomeerce, everything looks fine but I can share with someone if needed for help.

Thanks in advance for you help!