Icons no longer showing in the waybar

The waybar-updates module no longer shows up in waybar, not sure why this is happening all of a sudden, here's what the config looks like, ` "modules-left": ["sway/workspaces", "custom/updates", "tray", "sway/mode"],` ``` "custom/updates": { "format": "{icon}{}", "return-type": "json", "format-icons": { "pending-updates": "󰮯 ", "updated": "" }, "exec-if": "which waybar-updates", "exec": "waybar-updates" }, ``` ``` @keyframes blink { to { color: #ebdbb2; } #custom-updates { animation-timing-function: linear; animation-iteration-count: infinite; animation-direction: alternate; } #custom-updates.pending-updates { animation-name: blink; animation-duration: 3s; } ```