255: Obsolete shorthand for data URI hyperlinks
->,…
was a shorthand for ->data:text/plain;charset=UTF-8;base64,…
in Aneamal. So it marked a hyperlink with UTF-8 encoded plaintext data URI. This shorthand has been obsoleted, because most modern browsers have stopped navigating to data URIs in general. Hyperlinks to data URIs simply do not work on the web anymore. Your page still contains such a shorthand data URI hyperlink though.
Solution
Put the content of your data URI into a separate file and point your hyperlink to that file. You probably need to use a base64-decoder to extract the text from your shorthand data URI. For example, you could change a link like this
happy->,Oik=
to
happy->smile.txt
and save the base64-decoded string Oik=
which is :)
inside the file smile.txt.
If you still want to have the data URI hyperlink inside your webpage although browsers do not navigate to it anymore, you can replace the shorthand by the standard data URI syntax. So
happy->,Oik=
would have to be replaced by
happy->data:text/plain;charset=UTF-8;base64,Oik=
If you did not mean to use a shorthand data URI and instead want to link to a file whose address starts with a literal comma, you can prepend the comma with a backslash as in the following example:
Click to read `more information about commas`->\,.html