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.
vim-go
azure-functions-runtime
vtigercrm
phpfog
find-in-set
kiwi
rational-number
browser-testing
escp
widgetsbinding
ngb-typeahead
smartxls
background-music
webflux
typesafe-config
voting-system
flutter-js
distcp
mobilecoreservices
header-only
data-management
haskell-pipes
notficationserviceextension
noscript
locationmatch
uifont
coefficients
equals
html5-appcache
openshot