@peternarbus, These are not errors. The red discs with the white crosses in them indicate that the nets are not yet completely routed. In other words at least some part of the net is still only connected by a ratline because the copper tracking is incomplete. Please note however, that with the EasyEDA default settings, after you refresh the DRC Errors section, you may have Pad to Pad DRC errors on U2: 

Thank you Andy!