It looks like the error is coming from the ODS wrapper code that EG is generating, but as @Kurt_Bremser said, we would expect the ENCODING= value to be quoted, like this:
ODS HTML5(ID=EGHTML) FILE=EGHTML
OPTIONS(BITMAP_MODE='INLINE')
ENCODING='utf-8'
STYLE=HTMLBlue
NOGTITLE
NOGFOOTNOTE
GPATH=&sasworklocation;
Check the Encoding options and "additional" options in your Tools->Options->Results settings.
... View more