Fix strange error in pokedex fetch

structures/pokemon/PokemonStore.js

@@ -6,6 +6,7 @@ const missingno = require('../../assets/json/missingno');
 module.exports = class PokemonStore extends Collection {
 	async fetch(query) {
 		query = encodeURIComponent(query.toLowerCase().replace(/ /g, '-').replace(/[^a-zA-Z0-9-]/g, ''));
+		if (!query) return null;
 		const num = Number.parseInt(query, 10);
 		if (this.has(num)) return this.get(num);
 		const found = this.find(pokemon => pokemon.slug === query);
@@ -15,9 +16,13 @@ module.exports = class PokemonStore extends Collection {
 			this.set(pokemon.id, pokemon);
 			return pokemon;
 		}
-		const { body } = await request.get(`https://pokeapi.co/api/v2/pokemon-species/${query}/`);
-		const pokemon = new Pokemon(body);
-		this.set(pokemon.id, pokemon);
-		return pokemon;
+		try {
+			const { body } = await request.get(`https://pokeapi.co/api/v2/pokemon-species/${query}/`);
+			const pokemon = new Pokemon(body);
+			this.set(pokemon.id, pokemon);
+			return pokemon;
+		} catch {
+			return null;
+		}
 	}
 };