Weird error on website when commenting

Hi we keep getting a weird message when commenting on the site AHealingSpirit.org can you tell me how to fix it? Here is the code:

cURL error 6: Could not resolve host: a%20healing%20spirit
fsockopen error: php_network_getaddresses: getaddrinfo failed: Name or service not known
fsockopen error: php_network_getaddresses: getaddrinfo failed: Name or service not known
fsockopen error: php_network_getaddresses: getaddrinfo failed: Name or service not known
fsockopen error: php_network_getaddresses: getaddrinfo failed: Name or service not known
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The page I need help with: [log in to see the link]