Icons pi pi-check not showing

[SumunaTJ]

<ToggleButton onLabel="" offLabel="" onIcon="pi pi-check" offIcon="pi pi-times" checked={checked} onChange={(e) => setChecked(e.value)} />

my version
"primeicons": "^6.0.1",
"primereact": "^10.0.9",

its show like that, how can I fix it