Help if Active Storage tables are missing

When a user tries to create a new attachment or blog and the matching table is missing from the database
(`active_storage_attachments` and `active_storage_blobs` by default), an informative error is displayed
that invites users to run the `active_storage:install` task.

actionpack/lib/action_dispatch/middleware/exception_wrapper.rb

@@ -25,6 +25,7 @@ module ActionDispatch
       "ActionView::MissingTemplate"         => "missing_template",
       "ActionController::RoutingError"      => "routing_error",
       "AbstractController::ActionNotFound"  => "unknown_action",
+      "ActiveRecord::StatementInvalid"      => "invalid_statement",
       "ActionView::Template::Error"         => "template_error"
     )
 

actionpack/lib/action_dispatch/middleware/templates/rescues/invalid_statement.html.erb

@@ -0,0 +1,21 @@
+<header>
+  <h1>
+    <%= @exception.class.to_s %>
+    <% if @request.parameters['controller'] %>
+      in <%= @request.parameters['controller'].camelize %>Controller<% if @request.parameters['action'] %>#<%= @request.parameters['action'] %><% end %>
+    <% end %>
+  </h1>
+</header>
+
+<div id="container">
+  <h2>
+    <%= h @exception.message %>
+    <% if @exception.message.match? %r{#{ActiveStorage::Blob.table_name}|#{ActiveStorage::Attachment.table_name}} %>
+      <br />To resolve this issue run: bin/rails active_storage:install
+    <% end %>
+  </h2>
+
+  <%= render template: "rescues/_source" %>
+  <%= render template: "rescues/_trace" %>
+  <%= render template: "rescues/_request_and_response" %>
+</div>

actionpack/lib/action_dispatch/middleware/templates/rescues/invalid_statement.text.erb

@@ -0,0 +1,13 @@
+<%= @exception.class.to_s %><%
+  if @request.parameters['controller']
+%> in <%= @request.parameters['controller'].camelize %>Controller<% if @request.parameters['action'] %>#<%= @request.parameters['action'] %><% end %>
+<% end %>
+
+<%= @exception.message %>
+<% if @exception.message.match? %r{#{ActiveStorage::Blob.table_name}|#{ActiveStorage::Attachment.table_name}} %>
+To resolve this issue run: bin/rails active_storage:install
+<% end %>
+
+<%= render template: "rescues/_source" %>
+<%= render template: "rescues/_trace" %>
+<%= render template: "rescues/_request_and_response" %>