Warning: simplexml_load_string(): Entity: line 64: parser error : StartTag: invalid element name

Question

I'm using magento 1.9.1.0 and getting this error while accessing the site.

Warning: simplexml_load_string(): Entity: line 64: parser error : StartTag: invalid element name  in /home/**/public_html/lib/Varien/Simplexml/Config.php on line 383

I used this command to find out the invalid xml find . -type f -name "*.xml" -exec xmllint --noout {} \; and fix the xml files also. All of the files are showing valid if checking on any validator online. But still getting the issue on site.

Tried to log

Mage::log(print_r($xmlString, true));
Mage::log(print_r($this->_elementClass, true));

and got this result.

Can anyone tell me what is the exact issue and how can I solve it?

Answer 1

Though linting by brute force may cover all basis but that isn't really narrowing down the issue.

I'm sure you cleared cache after doing those changes.

With that in mind, try to find exactly when this error is occurring by logging out put before or after line 383:

Mage::log(print_r($xmlString, true));
Mage::log(print_r($this->_elementClass, true));

Now fix the error from the culprit file, check system log.

NOTE: will update with complete answer after feedback from OP