How can I remove class from Mark Feature?

[ZiNBO (ZBO)]

When I reset everything and press Upload or export font, this error show me. I don’t know how to delete it because I can’t see Mark feature.

[GeorgSeifert]

Can you send me that file?

[ZiNBO (ZBO)]

Done, plz check message.

[GeorgSeifert]

There are contextual anchors in yaMedial-myanmar, yaMedial-myanmar, jha-mon, jha-mon, yaMedial_waMedial-myanmar, yaMedial_waMedial-myanmar. Those contexts contain references to those classes.

[ZiNBO (ZBO)]

Ah, OK. Thanks