修改人数NAN问题

src/components/NumberInterval/NumberInterval.tsx

@@ -31,7 +31,7 @@ const NumberInterval: React.FC<NumberIntervalProps> = ({
   }, [value]);
 
   const handleChange = (value: { min: number | string, max: number | string, organizer_joined: boolean }) => {
-    const toNumber = (v: number | string): number => typeof v === 'string' ? Number(v) : v
+    const toNumber = (v: number | string): number => v ? (typeof v === 'string' ? Number(v) : v) : 1
     const { min, max, organizer_joined } = value;
     onChange({ min: toNumber(min), max: toNumber(max), organizer_joined })
   }