diff --git a/src/backend/InvenTree/plugin/api.py b/src/backend/InvenTree/plugin/api.py
index df1877bf56..2c5d3cc864 100644
--- a/src/backend/InvenTree/plugin/api.py
+++ b/src/backend/InvenTree/plugin/api.py
@@ -1,5 +1,7 @@
 """API for the plugin app."""
 
+from typing import Optional
+
 from django.core.exceptions import ValidationError
 from django.urls import include, path, re_path
 from django.utils.translation import gettext_lazy as _
@@ -266,7 +268,9 @@ class PluginSettingList(ListAPI):
     filterset_fields = ['plugin__active', 'plugin__key']
 
 
-def check_plugin(plugin_slug: str, plugin_pk: int) -> InvenTreePlugin:
+def check_plugin(
+    plugin_slug: Optional[str], plugin_pk: Optional[int]
+) -> InvenTreePlugin:
     """Check that a plugin for the provided slug exists and get the config.
 
     Args:
@@ -286,16 +290,16 @@ def check_plugin(plugin_slug: str, plugin_pk: int) -> InvenTreePlugin:
         raise NotFound(detail='Plugin not specified')
 
     # Define filter
-    filter = {}
+    filters = {}
     if plugin_slug:
-        filter['key'] = plugin_slug
+        filters['key'] = plugin_slug
     elif plugin_pk:
-        filter['pk'] = plugin_pk
+        filters['pk'] = plugin_pk
     ref = plugin_slug or plugin_pk
 
     # Check that the 'plugin' specified is valid
     try:
-        plugin_cgf = PluginConfig.objects.filter(**filter).first()
+        plugin_cgf = PluginConfig.objects.filter(**filters).first()
     except PluginConfig.DoesNotExist:
         raise NotFound(detail=f"Plugin '{ref}' not installed")
 
diff --git a/src/backend/InvenTree/report/templatetags/barcode.py b/src/backend/InvenTree/report/templatetags/barcode.py
index 72568421ad..8e9f2af993 100644
--- a/src/backend/InvenTree/report/templatetags/barcode.py
+++ b/src/backend/InvenTree/report/templatetags/barcode.py
@@ -39,7 +39,7 @@ def qrcode(data, **kwargs):
     fill_color = kwargs.pop('fill_color', 'black')
     back_color = kwargs.pop('back_color', 'white')
 
-    format = kwargs.pop('format', 'PNG')
+    img_format = kwargs.pop('format', 'PNG')
 
     params.update(**kwargs)
 
@@ -51,7 +51,7 @@ def qrcode(data, **kwargs):
     qri = qr.make_image(fill_color=fill_color, back_color=back_color)
 
     # Render to byte-encoded image
-    return image_data(qri, fmt=format)
+    return image_data(qri, fmt=img_format)
 
 
 @register.simple_tag()
@@ -59,7 +59,7 @@ def barcode(data, barcode_class='code128', **kwargs):
     """Render a barcode."""
     constructor = python_barcode.get_barcode_class(barcode_class)
 
-    format = kwargs.pop('format', 'PNG')
+    img_format = kwargs.pop('format', 'PNG')
 
     data = str(data).zfill(constructor.digits)
 
@@ -70,4 +70,4 @@ def barcode(data, barcode_class='code128', **kwargs):
     image = barcode_image.render(writer_options=kwargs)
 
     # Render to byte-encoded image
-    return image_data(image, fmt=format)
+    return image_data(image, fmt=img_format)
diff --git a/src/backend/InvenTree/templates/js/dynamic/nav.js b/src/backend/InvenTree/templates/js/dynamic/nav.js
index 188e7be98b..4f5c73d328 100644
--- a/src/backend/InvenTree/templates/js/dynamic/nav.js
+++ b/src/backend/InvenTree/templates/js/dynamic/nav.js
@@ -173,7 +173,7 @@ function generateTreeStructure(data, options) {
         };
 
         if (options.processNode) {
-            node = options.processNode(node);
+            data[data.indexOf(node)] = options.processNode(node);
         }
     }
 
@@ -188,7 +188,7 @@ function generateTreeStructure(data, options) {
             if (node.state.expanded) {
                 while (node.parent != null) {
                     nodes[node.parent].state.expanded = true;
-                    node = nodes[node.parent];
+                    data[data.indexOf(node)] = nodes[node.parent];
                 }
             }
 
diff --git a/src/frontend/src/components/editors/TemplateEditor/PdfPreview/PdfPreview.tsx b/src/frontend/src/components/editors/TemplateEditor/PdfPreview/PdfPreview.tsx
index c38e65f8a0..c0e48ae0a5 100644
--- a/src/frontend/src/components/editors/TemplateEditor/PdfPreview/PdfPreview.tsx
+++ b/src/frontend/src/components/editors/TemplateEditor/PdfPreview/PdfPreview.tsx
@@ -81,7 +81,9 @@ export const PdfPreviewComponent: PreviewAreaComponent = forwardRef(
             <Trans>Preview not available, click "Reload Preview".</Trans>
           </div>
         )}
-        {pdfUrl && <iframe src={pdfUrl} width="100%" height="100%" />}
+        {pdfUrl && (
+          <iframe src={pdfUrl} width="100%" height="100%" title="PDF Preview" />
+        )}
       </>
     );
   }
diff --git a/src/frontend/src/forms/PartForms.tsx b/src/frontend/src/forms/PartForms.tsx
index 352dd3d53d..570bb1ba20 100644
--- a/src/frontend/src/forms/PartForms.tsx
+++ b/src/frontend/src/forms/PartForms.tsx
@@ -117,7 +117,7 @@ export function usePartFields({
 /**
  * Construct a set of fields for creating / editing a PartCategory instance
  */
-export function partCategoryFields({}: {}): ApiFormFieldSet {
+export function partCategoryFields(): ApiFormFieldSet {
   let fields: ApiFormFieldSet = {
     parent: {
       description: t`Parent part category`,
diff --git a/src/frontend/src/forms/StockForms.tsx b/src/frontend/src/forms/StockForms.tsx
index 8f871cea6f..8d7df62f5a 100644
--- a/src/frontend/src/forms/StockForms.tsx
+++ b/src/frontend/src/forms/StockForms.tsx
@@ -902,7 +902,7 @@ export function useDeleteStockItem(props: StockOperationProps) {
   });
 }
 
-export function stockLocationFields({}: {}): ApiFormFieldSet {
+export function stockLocationFields(): ApiFormFieldSet {
   let fields: ApiFormFieldSet = {
     parent: {
       description: t`Parent stock location`,
diff --git a/src/frontend/src/functions/auth.tsx b/src/frontend/src/functions/auth.tsx
index 863b20f24e..8325bfc8b2 100644
--- a/src/frontend/src/functions/auth.tsx
+++ b/src/frontend/src/functions/auth.tsx
@@ -5,7 +5,7 @@ import { NavigateFunction } from 'react-router-dom';
 
 import { api, setApiDefaults } from '../App';
 import { ApiEndpoints } from '../enums/ApiEndpoints';
-import { apiUrl, useServerApiState } from '../states/ApiState';
+import { apiUrl } from '../states/ApiState';
 import { useLocalState } from '../states/LocalState';
 import { useUserState } from '../states/UserState';
 import { fetchGlobalStates } from '../states/states';
@@ -47,8 +47,7 @@ function post(path: string, params: any, method = 'post') {
  */
 export const doBasicLogin = async (username: string, password: string) => {
   const { host } = useLocalState.getState();
-  const { clearUserState, setToken, fetchUserState, isLoggedIn } =
-    useUserState.getState();
+  const { clearUserState, setToken, fetchUserState } = useUserState.getState();
 
   if (username.length == 0 || password.length == 0) {
     return;
@@ -96,7 +95,7 @@ export const doBasicLogin = async (username: string, password: string) => {
 
   if (result) {
     await fetchUserState();
-    await fetchGlobalStates();
+    fetchGlobalStates();
   } else {
     clearUserState();
   }
diff --git a/src/frontend/src/pages/Index/Playground.tsx b/src/frontend/src/pages/Index/Playground.tsx
index 8ce44f54f8..ad8cb38e91 100644
--- a/src/frontend/src/pages/Index/Playground.tsx
+++ b/src/frontend/src/pages/Index/Playground.tsx
@@ -27,7 +27,7 @@ import {
 } from '../../hooks/UseForm';
 
 // Generate some example forms using the modal API forms interface
-const fields = partCategoryFields({});
+const fields = partCategoryFields();
 
 function ApiFormsPlayground() {
   const editCategory = useEditApiFormModal({
diff --git a/src/frontend/src/pages/Index/Settings/AccountSettings/SecurityContent.tsx b/src/frontend/src/pages/Index/Settings/AccountSettings/SecurityContent.tsx
index 8b3904b12f..16de9036a8 100644
--- a/src/frontend/src/pages/Index/Settings/AccountSettings/SecurityContent.tsx
+++ b/src/frontend/src/pages/Index/Settings/AccountSettings/SecurityContent.tsx
@@ -89,7 +89,7 @@ export function SecurityContent() {
   );
 }
 
-function EmailContent({}: {}) {
+function EmailContent() {
   const [value, setValue] = useState<string>('');
   const [newEmailValue, setNewEmailValue] = useState('');
   const [user] = useUserState((state) => [state.user]);
@@ -321,7 +321,7 @@ function SsoContent({ dataProvider }: { dataProvider: any | undefined }) {
   );
 }
 
-function MfaContent({}: {}) {
+function MfaContent() {
   return (
     <>
       MFA Details
diff --git a/src/frontend/src/pages/part/CategoryDetail.tsx b/src/frontend/src/pages/part/CategoryDetail.tsx
index 2a5dca6661..7326a27638 100644
--- a/src/frontend/src/pages/part/CategoryDetail.tsx
+++ b/src/frontend/src/pages/part/CategoryDetail.tsx
@@ -42,7 +42,7 @@ import { PartListTable } from '../../tables/part/PartTable';
  *
  * Note: If no category ID is supplied, this acts as the top-level part category page
  */
-export default function CategoryDetail({}: {}) {
+export default function CategoryDetail() {
   const { id: _id } = useParams();
   const id = useMemo(
     () => (!isNaN(parseInt(_id || '')) ? _id : undefined),
@@ -158,7 +158,7 @@ export default function CategoryDetail({}: {}) {
     url: ApiEndpoints.category_list,
     pk: id,
     title: t`Edit Part Category`,
-    fields: partCategoryFields({}),
+    fields: partCategoryFields(),
     onFormSuccess: refreshInstance
   });
 
diff --git a/src/frontend/src/pages/part/pricing/PricingPanel.tsx b/src/frontend/src/pages/part/pricing/PricingPanel.tsx
index 69a8db211d..cc8b4d45fe 100644
--- a/src/frontend/src/pages/part/pricing/PricingPanel.tsx
+++ b/src/frontend/src/pages/part/pricing/PricingPanel.tsx
@@ -21,10 +21,9 @@ function AccordionControl(props: AccordionControlProps) {
   return (
     <Box style={{ display: 'flex', alignItems: 'center' }}>
       {props.disabled && (
-        <Tooltip
-          label={t`No data available`}
-          children={<IconAlertCircle size="1rem" color="gray" />}
-        />
+        <Tooltip label={t`No data available`}>
+          <IconAlertCircle size="1rem" color="gray" />
+        </Tooltip>
       )}
       <Accordion.Control
         {...props}
diff --git a/src/frontend/src/pages/stock/LocationDetail.tsx b/src/frontend/src/pages/stock/LocationDetail.tsx
index 4ad6330286..ab27c385ee 100644
--- a/src/frontend/src/pages/stock/LocationDetail.tsx
+++ b/src/frontend/src/pages/stock/LocationDetail.tsx
@@ -210,7 +210,7 @@ export default function Stock() {
     url: ApiEndpoints.stock_location_list,
     pk: id,
     title: t`Edit Stock Location`,
-    fields: stockLocationFields({}),
+    fields: stockLocationFields(),
     onFormSuccess: refreshInstance
   });
 
diff --git a/src/frontend/src/tables/InvenTreeTable.tsx b/src/frontend/src/tables/InvenTreeTable.tsx
index 66b82b052e..8a834b4220 100644
--- a/src/frontend/src/tables/InvenTreeTable.tsx
+++ b/src/frontend/src/tables/InvenTreeTable.tsx
@@ -608,7 +608,7 @@ export function InvenTreeTable<T = any>({
                 enableLabels={tableProps.enableLabels}
                 enableReports={tableProps.enableReports}
               />
-              {(tableProps.barcodeActions?.length ?? 0 > 0) && (
+              {(tableProps.barcodeActions?.length ?? 0) > 0 && (
                 <ButtonMenu
                   key="barcode-actions"
                   icon={<IconBarcode />}
diff --git a/src/frontend/src/tables/part/PartCategoryTable.tsx b/src/frontend/src/tables/part/PartCategoryTable.tsx
index 76ccb257f8..3809e499e4 100644
--- a/src/frontend/src/tables/part/PartCategoryTable.tsx
+++ b/src/frontend/src/tables/part/PartCategoryTable.tsx
@@ -76,7 +76,7 @@ export function PartCategoryTable({ parentId }: { parentId?: any }) {
   const newCategory = useCreateApiFormModal({
     url: ApiEndpoints.category_list,
     title: t`New Part Category`,
-    fields: partCategoryFields({}),
+    fields: partCategoryFields(),
     initialData: {
       parent: parentId
     },
@@ -91,7 +91,7 @@ export function PartCategoryTable({ parentId }: { parentId?: any }) {
     url: ApiEndpoints.category_list,
     pk: selectedCategory,
     title: t`Edit Part Category`,
-    fields: partCategoryFields({}),
+    fields: partCategoryFields(),
     onFormSuccess: (record: any) => table.updateRecord(record)
   });
 
diff --git a/src/frontend/src/tables/part/PartCategoryTemplateTable.tsx b/src/frontend/src/tables/part/PartCategoryTemplateTable.tsx
index 1617226716..d718aca421 100644
--- a/src/frontend/src/tables/part/PartCategoryTemplateTable.tsx
+++ b/src/frontend/src/tables/part/PartCategoryTemplateTable.tsx
@@ -19,7 +19,7 @@ import { TableFilter } from '../Filter';
 import { InvenTreeTable } from '../InvenTreeTable';
 import { RowDeleteAction, RowEditAction } from '../RowActions';
 
-export default function PartCategoryTemplateTable({}: {}) {
+export default function PartCategoryTemplateTable() {
   const table = useTable('part-category-parameter-templates');
   const user = useUserState();
 
diff --git a/src/frontend/src/tables/stock/StockLocationTable.tsx b/src/frontend/src/tables/stock/StockLocationTable.tsx
index f8bc23e4ec..f4ce6bec30 100644
--- a/src/frontend/src/tables/stock/StockLocationTable.tsx
+++ b/src/frontend/src/tables/stock/StockLocationTable.tsx
@@ -97,7 +97,7 @@ export function StockLocationTable({ parentId }: { parentId?: any }) {
   const newLocation = useCreateApiFormModal({
     url: ApiEndpoints.stock_location_list,
     title: t`Add Stock Location`,
-    fields: stockLocationFields({}),
+    fields: stockLocationFields(),
     initialData: {
       parent: parentId
     },
@@ -112,7 +112,7 @@ export function StockLocationTable({ parentId }: { parentId?: any }) {
     url: ApiEndpoints.stock_location_list,
     pk: selectedLocation,
     title: t`Edit Stock Location`,
-    fields: stockLocationFields({}),
+    fields: stockLocationFields(),
     onFormSuccess: (record: any) => table.updateRecord(record)
   });