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.
pyexcelerator
urdu
corner-detection
formatjs
fieldset
wordpress-flamingo-plugin
aggregate-functions
setcookie
uint32
yii2-model
aspectj-maven-plugin
ziparchive
aes
portable-executable
dateinterval
api-linkpreview
html.hiddenfor
spatial-data-frame
stripslashes
shape-outside
sarsa
marginal-effects
node-amqplib
ref-qualifier
formtastic
cri-o
apple-model-io
react-bootstrap
buildbox
shuffle