diff --git a/src/App.tsx b/src/App.tsx
index 3b82754..65c91e3 100644
--- a/src/App.tsx
+++ b/src/App.tsx
@@ -47,7 +47,7 @@ import { AccessManagementHub, AdminMandatesPage, AdminUsersPage, AdminUserMandat
 import { PromptsPage, FilesPage, ConnectionsPage } from './pages/basedata';
 
 // Billing Pages
-import { BillingDashboard, BillingDataView, BillingAdmin } from './pages/billing';
+import { BillingDataView, BillingAdmin } from './pages/billing';
 
 function App() {
     // Load saved theme preference and set app name on app mount
diff --git a/src/components/FormGenerator/FormGeneratorReport/FormGeneratorReport.tsx b/src/components/FormGenerator/FormGeneratorReport/FormGeneratorReport.tsx
index 0240eed..acfb92a 100644
--- a/src/components/FormGenerator/FormGeneratorReport/FormGeneratorReport.tsx
+++ b/src/components/FormGenerator/FormGeneratorReport/FormGeneratorReport.tsx
@@ -319,7 +319,7 @@ const _renderPieChart = (section: ReportSectionPieChart, currencyCode: string):
             ))}
           </Pie>
           <Tooltip 
-            formatter={(value: number, name: string) => [formatter(value), name]} 
+            formatter={(value: number | undefined, name: string | undefined) => [formatter(value ?? 0), name ?? '']} 
           />
           <Legend 
             formatter={(value: string) => {
diff --git a/src/hooks/usePrompts.ts b/src/hooks/usePrompts.ts
index 3818047..bc5c3a5 100644
--- a/src/hooks/usePrompts.ts
+++ b/src/hooks/usePrompts.ts
@@ -9,6 +9,7 @@ import {
   updatePrompt as updatePromptApi,
   deletePrompt as deletePromptApi,
   type Prompt,
+  type UpdatePromptData,
   type AttributeDefinition,
   type PaginationParams
 } from '../api/promptApi';
@@ -531,7 +532,7 @@ export function usePromptOperations() {
       // Pass all provided fields (supports partial inline updates like isSystem toggle)
       const { id, mandateId, _createdBy, _createdAt, _modifiedAt, _permissions, ...requestBody } = updateData;
       
-      const updatedPrompt = await updatePromptApi(request, promptId, requestBody);
+      const updatedPrompt = await updatePromptApi(request, promptId, requestBody as UpdatePromptData);
       
       return { success: true, promptData: updatedPrompt };
     } catch (error: any) {
diff --git a/src/pages/basedata/FilesPage.tsx b/src/pages/basedata/FilesPage.tsx
index 09b6c22..36eb49f 100644
--- a/src/pages/basedata/FilesPage.tsx
+++ b/src/pages/basedata/FilesPage.tsx
@@ -89,9 +89,7 @@ export const FilesPage: React.FC = () => {
       width: 150,
       minWidth: 100,
       maxWidth: 250,
-      fkSource: '/api/users/',
-      fkDisplayField: 'username',
-    });
+    } as any);
 
     return cols;
   }, [attributes]);
diff --git a/src/pages/billing/BillingAdmin.tsx b/src/pages/billing/BillingAdmin.tsx
index 8a27eda..416bd70 100644
--- a/src/pages/billing/BillingAdmin.tsx
+++ b/src/pages/billing/BillingAdmin.tsx
@@ -380,7 +380,7 @@ const AccountsOverview: React.FC<AccountsOverviewProps> = ({ accounts, users, lo
 
 export const BillingAdmin: React.FC = () => {
   const [selectedMandateId, setSelectedMandateId] = useState<string | null>(null);
-  const { settings, accounts, users, loading, loadSettings, saveSettings, addCredit, loadAccounts } = useBillingAdmin(selectedMandateId || undefined);
+  const { settings, accounts, users, loading, saveSettings, addCredit, loadAccounts } = useBillingAdmin(selectedMandateId || undefined);
   
   const handleMandateSelect = (mandateId: string) => {
     setSelectedMandateId(mandateId || null);
diff --git a/src/pages/billing/BillingDashboard.tsx b/src/pages/billing/BillingDashboard.tsx
index 8e73efb..bc586fd 100644
--- a/src/pages/billing/BillingDashboard.tsx
+++ b/src/pages/billing/BillingDashboard.tsx
@@ -164,7 +164,6 @@ export const BillingDashboard: React.FC = () => {
     balances, 
     statistics, 
     loading, 
-    loadBalances, 
     loadStatistics 
   } = useBilling();