com.google.re2j.PatternSyntaxException: error parsing regexp: invalid or unsupported Perl syntax: (?! #147 Closed ravipras8 opened on Oct 6, 2021 ...

You can get an 'invalid XML error' message if you have altered or edited the XML file generated from the ITR utility/form before uploading the same to the portal.

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues. If you have found a problem that seems similar to this, please ...

Outlook is an office management program from Micrsoft Office 365. Here's how to fix the error XML not valid in Outlook.

Learn how to fix Docker's "Invalid Reference Format" error by understanding image naming rules, tags, variables, and syntax.

Fix Cannot start Microsoft Office Outlook. Cannot open the Outlook window. Invalid XML, the view cannot be loaded error using these solutions.

If you are currently seeing a warning in Google Webmaster Tools that reads, "Invalid XML tag," don't worry. There are many webmasters reporting the issue and Google has confirmed it is a bug ...

There are several reports in the Google Webmaster Help forums with bad errors on geo sitemaps. Webmasters are claiming that all of a sudden their geo sitemaps files are returning an "invalid XML ...