errors is calculated by dividing the token length of a specified query term by 4,
preserving a minimum of 1 errors. A static error distance can be set by adjusting
the <code>[[Options#Full-Text OptionsLSERROR|LSERROR]]</code> property (default: <code>SET LSERROR 0</code>).
The query above yields two results as there is no error between the query term
"foo" and the text node "foo bar", and one error between