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.
libcurl
network-protocols
oserror
monkeyrunner
cloudera-cdp
ethers.js
itemssource
reward
simpledateformat
watson-knowledge-studio
python-xmlschema
expression-evaluation
solidus
spatial
deep-residual-networks
iphone-5
elgg
stack-corruption
iron
awesomeprint
obspy
aws-iot-analytics
geostatistics
pose-estimation
react-pdf-viewer
add
out-of-memory
solid
p8
null-conditional-operator