I have custom icons that work fine on IOS and Android. When I deploy on the Web, a crossed out box appears in each place in the App where my icon should appear.
gosu
stroke-dasharray
event-driven
utility
twilio-video
reminders
spring-messaging
postgresql.conf
textview
nsdiffabledatasourcesnapshot
dotnet-linux
arrayiterator
dsolve
openvz
web-optimization
spatialite
redisgraph
pybricks-micropython
android-flavors
pix
genericdao
geolite2
nftables
strongly-typed-dataset
trackpy
katacoda
jsonlint
copy-local
weld
iphone-xs-max