added proper error messages

shared/schemas/trainingReportSchema.ts

@@ -1,11 +1,11 @@
 import { z } from "zod";
 
 export const courseEventAttendeeSchema = z.object({
-    attendee_id: z.number().int().positive(),
+    attendee_id: z.number({invalid_type_error: "Must select a member"}).int().positive(),
     passed_bookwork: z.boolean(),
     passed_qual: z.boolean(),
     remarks: z.string(),
-    attendee_role_id: z.number().int().positive()
+    attendee_role_id: z.number({invalid_type_error: "Must select a role"}).int().positive()
 })
 
 export const trainingReportSchema = z.object({