Try saving that 1064.eps file 1064.ai. Then save swatches to that location. eps is just an outdated format that causes much tech trouble, and does not even support transparency. Could be passing garbage code as I did a test with 2 swatches and worked, but I used .ai on Mac OS catalina.
If you still get the error about type being outlined, try opening the file and seeing if there is any type on the page. the page should be blank, but your swatches palette should have the gradient swatches you made.