I did not know about this error message before.
"The character encoding of the HTML document was not declared. The document will render with garbled text in some browser configurations if the document contains characters from outside the US-ASCII range. The character encoding of the page must to be declared in the document or in the transfer protocol."

Place the following line of code as shown in above picture :)

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

The error message will disappear. Thanks and have a nice day!!! :)