Situation:
When you browse the Web, you see a SymError( ) function inserted into the Web page source code.
Solution:
The SymError() function is a normal activity of the Ad Blocking feature in your Norton program. Unless you experience specific problems because of this function, then you do not need to do anything.
However, if you require that this function disappear, then you may disable Ad Blocking to stop the SymError() function from appearing in most Web pages. For instructions on how to disable Ad Blocking, read the document Enabling or disabling Ad Blocking and Pop-up Window Blocking.