Type '{ input: { slug: string; }; "": any; }' is not assignable to type 'string | StringFilter<"Category"> | undefined'. ``` ts getCategoryBySlug: publicProcedure .input(z.object({ slug: z.string() })) .query(async ({ input, ctx }) => { const category = await ctx.prisma.category.findUnique({ where: { slug: {input.slug}, }, });```