Notice: entity "..." doesn"t end in ";"

Cause:

The error is caused by an improperly terminated character entity.

In HTML 4, this is a notice message or XHTML, however, it is an error.

Example:

Entity "&nbsp" doesn't end in ";"

GoodSome &nsbp &nsbp spaces
GoodSome &nsbp;&nsbp;spaces

Solution:

Add a ";" at the end of each entity.

References: