diff --git a/.github/workflows/mkdocs-material.yml b/.github/workflows/mkdocs-material.yml
index be665aee54..d6388bce8d 100644
--- a/.github/workflows/mkdocs-material.yml
+++ b/.github/workflows/mkdocs-material.yml
@@ -2,8 +2,7 @@ name: mkdocs-material
 on:
   push:
     branches:
-      - 'main'
-      - 'development'
+      - 'refs/heads/v2.3'
 
 permissions:
     contents: write
@@ -12,6 +11,10 @@ jobs:
   mkdocs-material:
     if: github.event.pull_request.draft == false
     runs-on: ubuntu-latest
+    env:
+      REPO_URL: '${{ github.server_url }}/${{ github.repository }}'
+      REPO_NAME: '${{ github.repository }}'
+      SITE_URL: 'https://${{ github.repository_owner }}.github.io/InvokeAI'
     steps:
       - name: checkout sources
         uses: actions/checkout@v3
@@ -22,11 +25,15 @@ jobs:
         uses: actions/setup-python@v4
         with:
           python-version: '3.10'
+          cache: pip
+          cache-dependency-path: pyproject.toml
 
       - name: install requirements
+        env:
+          PIP_USE_PEP517: 1
         run: |
           python -m \
-            pip install -r docs/requirements-mkdocs.txt
+            pip install ".[docs]"
 
       - name: confirm buildability
         run: |
diff --git a/invokeai/frontend/web/src/features/system/store/systemSlice.ts b/invokeai/frontend/web/src/features/system/store/systemSlice.ts
index 41cb33f88c..a8c8da9bfb 100644
--- a/invokeai/frontend/web/src/features/system/store/systemSlice.ts
+++ b/invokeai/frontend/web/src/features/system/store/systemSlice.ts
@@ -384,6 +384,13 @@ export const systemSlice = createSlice({
       state.statusTranslationKey = 'common.statusPreparing';
     });
 
+    builder.addCase(sessionInvoked.rejected, (state, action) => {
+      const error = action.payload as string | undefined;
+      state.toastQueue.push(
+        makeToast({ title: error || t('toast.serverError'), status: 'error' })
+      );
+    });
+
     /**
      * Session Canceled
      */
diff --git a/invokeai/frontend/web/src/services/events/middleware.ts b/invokeai/frontend/web/src/services/events/middleware.ts
index dab2e756f3..65652ae7ee 100644
--- a/invokeai/frontend/web/src/services/events/middleware.ts
+++ b/invokeai/frontend/web/src/services/events/middleware.ts
@@ -46,6 +46,8 @@ export const socketMiddleware = () => {
       // TODO: handle providing jwt to socket.io
       socketOptions.auth = { token: OpenAPI.TOKEN };
     }
+
+    socketOptions.transports = ['websocket', 'polling'];
   }
 
   const socket: Socket<ServerToClientEvents, ClientToServerEvents> = io(
diff --git a/invokeai/frontend/web/src/services/events/util/setEventListeners.ts b/invokeai/frontend/web/src/services/events/util/setEventListeners.ts
index 89bbc717a3..581363e446 100644
--- a/invokeai/frontend/web/src/services/events/util/setEventListeners.ts
+++ b/invokeai/frontend/web/src/services/events/util/setEventListeners.ts
@@ -22,6 +22,8 @@ import {
 } from 'services/thunks/gallery';
 import { receivedModels } from 'services/thunks/model';
 import { receivedOpenAPISchema } from 'services/thunks/schema';
+import { makeToast } from '../../../features/system/hooks/useToastWatcher';
+import { addToast } from '../../../features/system/store/systemSlice';
 
 type SetEventListenersArg = {
   socket: Socket<ServerToClientEvents, ClientToServerEvents>;
@@ -78,6 +80,16 @@ export const setEventListeners = (arg: SetEventListenersArg) => {
     }
   });
 
+  socket.on('connect_error', (error) => {
+    if (error && error.message) {
+      dispatch(
+        addToast(
+          makeToast({ title: error.message, status: 'error', duration: 10000 })
+        )
+      );
+    }
+  });
+
   /**
    * Disconnect
    */
diff --git a/invokeai/frontend/web/src/services/thunks/session.ts b/invokeai/frontend/web/src/services/thunks/session.ts
index af03045967..6bd7f01c26 100644
--- a/invokeai/frontend/web/src/services/thunks/session.ts
+++ b/invokeai/frontend/web/src/services/thunks/session.ts
@@ -101,17 +101,24 @@ export const nodeAdded = createAppAsyncThunk(
  */
 export const sessionInvoked = createAppAsyncThunk(
   'api/sessionInvoked',
-  async (arg: { sessionId: string }, _thunkApi) => {
+  async (arg: { sessionId: string }, { rejectWithValue }) => {
     const { sessionId } = arg;
 
-    const response = await SessionsService.invokeSession({
-      sessionId,
-      all: true,
-    });
+    try {
+      const response = await SessionsService.invokeSession({
+        sessionId,
+        all: true,
+      });
+      sessionLog.info({ arg, response }, `Session invoked (${sessionId})`);
 
-    sessionLog.info({ arg, response }, `Session invoked (${sessionId})`);
-
-    return response;
+      return response;
+    } catch (error) {
+      const err = error as any;
+      if (err.status === 403) {
+        return rejectWithValue(err.body.detail);
+      }
+      throw error;
+    }
   }
 );