diff --git a/frontend/src/app/about-us/cases/CaseCard.tsx b/frontend/src/app/about-us/cases/CaseCard.tsx
index 661b872c..28ca8b13 100644
--- a/frontend/src/app/about-us/cases/CaseCard.tsx
+++ b/frontend/src/app/about-us/cases/CaseCard.tsx
@@ -22,13 +22,13 @@ export const CaseCard: React.FC<CaseCardProps> = ({ caseItem, caseData }) => {
     }
   };
 
-  const getStatusColor = (status: string) => {
-    const statusColor: { [key: string]: string } = {
-      "Critical": "rose",
-      "Requires attention": "amber",
-      "All right": "lime"
-    };
-    return statusColor[status] || "zinc";
+  const getStatusColor = (status: string): "zinc" | "rose" | "amber" | "lime" => {
+    switch (status) {
+      case "Critical": return "rose";
+      case "Requires attention": return "amber";
+      case "All right": return "lime";
+      default: return "zinc";
+    }
   };
 
   const formatDate = (dateString: string) => {
@@ -121,12 +121,12 @@ export const CaseCard: React.FC<CaseCardProps> = ({ caseItem, caseData }) => {
                   date.setDate(date.getDate() - date.getDay() - 7 * (6 - i));
                   return date.toLocaleDateString('pt-BR', { day: '2-digit', month: '2-digit' });
                 }), 'AVG'].map((date, index) => {
-                  const weekData = index < 6 ? caseData.byWeek.find(week => week.week.startsWith(date)) : null;
+                  const weekData = index < 6 ? caseData.byWeek.find((week: { week: string; }) => week.week.startsWith(date)) : null;
                   const averageData = index === 6 ? {
-                    totalConsultingHours: caseData.byWeek.reduce((sum, week) => sum + week.totalConsultingHours, 0) / 6,
-                    totalHandsOnHours: caseData.byWeek.reduce((sum, week) => sum + week.totalHandsOnHours, 0) / 6,
-                    totalSquadHours: caseData.byWeek.reduce((sum, week) => sum + week.totalSquadHours, 0) / 6,
-                    totalInternalHours: caseData.byWeek.reduce((sum, week) => sum + week.totalInternalHours, 0) / 6
+                    totalConsultingHours: caseData.byWeek.reduce((sum: any, week: { totalConsultingHours: any; }) => sum + week.totalConsultingHours, 0) / 6,
+                    totalHandsOnHours: caseData.byWeek.reduce((sum: any, week: { totalHandsOnHours: any; }) => sum + week.totalHandsOnHours, 0) / 6,
+                    totalSquadHours: caseData.byWeek.reduce((sum: any, week: { totalSquadHours: any; }) => sum + week.totalSquadHours, 0) / 6,
+                    totalInternalHours: caseData.byWeek.reduce((sum: any, week: { totalInternalHours: any; }) => sum + week.totalInternalHours, 0) / 6
                   } : null;
                   const data = index < 6 ? weekData : averageData;
                   return (
diff --git a/frontend/src/app/about-us/products-or-services/page.tsx b/frontend/src/app/about-us/products-or-services/page.tsx
index 496de93a..adb390a5 100644
--- a/frontend/src/app/about-us/products-or-services/page.tsx
+++ b/frontend/src/app/about-us/products-or-services/page.tsx
@@ -1,7 +1,7 @@
 "use client";
 
 import { Heading } from "@/components/catalyst/heading";
-import { gql, useQuery } from "@apollo/client";
+import { gql, HttpLink, useQuery } from "@apollo/client";
 import Image from "next/image";
 import Link from "next/link";
 import { useState } from "react";
@@ -55,9 +55,8 @@ export default function ProductsOrServices() {
 
   if (loading) return <p>Loading...</p>;
   if (error) return <p>Error: {error.message}</p>;
-
   const queryString = print(GET_OFFERS_AND_TIMESHEET);
-  const GRAPHQL_ENDPOINT = (client.link.options as any).uri;
+  const GRAPHQL_ENDPOINT = client.link instanceof HttpLink ? client.link.options.uri : undefined;
 
   const handleStatClick = (statName: string) => {
     setSelectedStat(statName);
diff --git a/frontend/src/app/analytics/datasets/[[...slug]]/page.tsx b/frontend/src/app/analytics/datasets/[[...slug]]/page.tsx
index c247e9d1..03be4aed 100644
--- a/frontend/src/app/analytics/datasets/[[...slug]]/page.tsx
+++ b/frontend/src/app/analytics/datasets/[[...slug]]/page.tsx
@@ -95,14 +95,16 @@ export default function Datasets() {
   const updateQueryString = (newSelectedValues: SelectValue[]) => {
     const params = new URLSearchParams();
     const uniqueFilters: Record<string, Set<string>> = {};
-
+    
     newSelectedValues.forEach(value => {
-      if (typeof value.value === 'string') {
+      if (value && 'value' in value && typeof value.value === 'string') {
         const [field, fieldValue] = value.value.split(':');
-        if (!uniqueFilters[field]) {
-          uniqueFilters[field] = new Set();
+        if (field && fieldValue) {
+          if (!uniqueFilters[field]) {
+            uniqueFilters[field] = new Set();
+          }
+          uniqueFilters[field].add(fieldValue);
         }
-        uniqueFilters[field].add(fieldValue);
       }
     });
 
@@ -140,19 +142,19 @@ export default function Datasets() {
       <div className="mb-6">
         <form className="pl-2 pr-2">
           <Select
-            value={selectedValues}
+            value={selectedValues as SelectValue}
             options={filterableFields.map((f: any) => ({
               label: String(f.field ?? 'Unknown Field'),
               options: Array.from(new Set((f.options || [])
-                .filter((o: any) => o != null)
-                .map((o: any) => String(o))))
-                .map((o: string) => ({
+                .filter((o: unknown) => o != null)
+                .map((o: unknown) => String(o))))
+                .map((o: unknown) => ({
                   value: `${f.field}:${o}`,
-                  label: o,
+                  label: String(o),
                 }))
             }))}
             placeholder="Filters..."
-            onChange={(value): void => {
+            onChange={(value: unknown | unknown[]): void => {
               const newSelectedValues = Array.isArray(value) ? value : [];
               setSelectedValues(newSelectedValues);
               updateQueryString(newSelectedValues);
diff --git a/frontend/src/app/analytics/week-review/FilterFieldsSelect.tsx b/frontend/src/app/analytics/week-review/FilterFieldsSelect.tsx
index 493f908c..4df18757 100644
--- a/frontend/src/app/analytics/week-review/FilterFieldsSelect.tsx
+++ b/frontend/src/app/analytics/week-review/FilterFieldsSelect.tsx
@@ -1,11 +1,11 @@
 import React from 'react';
 import SelectComponent from "react-tailwindcss-select";
-import { SelectValue as TailwindSelectValue } from "react-tailwindcss-select/dist/components/type";
+import { Option } from "react-tailwindcss-select/dist/components/type";
 
 interface FilterFieldsSelectProps {
   data: any;
-  selectedFilters: TailwindSelectValue[];
-  handleFilterChange: (value: TailwindSelectValue | TailwindSelectValue[]) => void;
+  selectedFilters: Option[];
+  handleFilterChange: (value: Option | Option[] | null) => void;
 }
 
 export const FilterFieldsSelect: React.FC<FilterFieldsSelectProps> = ({ data, selectedFilters, handleFilterChange }) => {
diff --git a/frontend/src/app/analytics/week-review/page.tsx b/frontend/src/app/analytics/week-review/page.tsx
index 631ad091..6a512fe2 100644
--- a/frontend/src/app/analytics/week-review/page.tsx
+++ b/frontend/src/app/analytics/week-review/page.tsx
@@ -5,6 +5,7 @@ import { Heading } from "@/components/catalyst/heading";
 import { format } from "date-fns";
 import { useQuery } from "@apollo/client";
 import { motion } from "framer-motion";
+import { Option } from "react-tailwindcss-select/dist/components/type";
 
 import { WEEK_REVIEW_QUERY } from "./weekReviewQuery";
 import { DatePicker } from "@/components/DatePicker";
@@ -16,7 +17,7 @@ import AllocationAnalysisTables from './AllocationAnalysisTables';
 
 export default function WeekReview() {
   const [date, setDate] = useState<Date>(new Date());
-  const [selectedFilters, setSelectedFilters] = useState<TailwindSelectValue[]>(
+  const [selectedFilters, setSelectedFilters] = useState<Option[]>(
     []
   );
   const [formattedSelectedValues, setFormattedSelectedValues] = useState<
@@ -41,9 +42,9 @@ export default function WeekReview() {
   };
 
   const handleFilterChange = (
-    value: TailwindSelectValue | TailwindSelectValue[]
+    value: Option | Option[] | null
   ): void => {
-    const newSelectedValues = Array.isArray(value) ? value : [];
+    const newSelectedValues = Array.isArray(value) ? value : value ? [value] : [];
     setSelectedFilters(newSelectedValues);
 
     const formattedValues =
diff --git a/frontend/src/app/api/auth/[...nextauth]/route.ts b/frontend/src/app/api/auth/[...nextauth]/route.ts
index 7d9ca35f..2806cc85 100644
--- a/frontend/src/app/api/auth/[...nextauth]/route.ts
+++ b/frontend/src/app/api/auth/[...nextauth]/route.ts
@@ -2,7 +2,7 @@ import NextAuth from "next-auth";
 import GoogleProvider from "next-auth/providers/google";
 import { NextAuthOptions } from "next-auth";
 
-export const authOptions: NextAuthOptions = {
+const authOptions: NextAuthOptions = {
   providers: [
     GoogleProvider({
       clientId: process.env.GOOGLE_CLIENT_ID!,