They should take advantage in having a dual vocalist band, its very likely that Emily was the one who got sick.
The band should have an emergency set based around Mike, 14 tracks, the interludes, Hahn solo and you have a show.
The 2017-2018 Shinoda solo shows were very interesting and he even performed tons of LP tracks.
It's just a very simple solution to say we are sorry fuck your time, hotel, flights.
Hardcore would love this and the papercuts will be okay and not angry/sad for not having a show.