Paragraph migration for link field not working
I guess both icon_url and icon_type are fields of your paragraph entity.
Remove the leading blanks in front of the line

icon_url:


until it has the same indentation level as icon_type.

(Whitespaces are very important in YAML: Indenting something blanks makes it a child of a previous line with less blanks. In your example icon_url has 2 blanks and therefor it is a sub value of field icon_type. With only one blank [same as icon_type and all the other fields] it means that icon_url is a direct child of the global process [the one without blanks].)