specs

app/controllers/sessions_controller.rb

@@ -1,8 +1,9 @@
 class SessionsController < ApplicationController
   def clear_filters
     session[session_name_for(params[:filter_type])] = "{}"
+    path_params = params[:path_params].presence || {}
 
-    redirect_to send("#{params[:filter_type]}_path", scheme_id: params[:path_params][:scheme_id])
+    redirect_to send("#{params[:filter_type]}_path", scheme_id: path_params[:scheme_id])
   end
 
 private

app/views/locations/_location_filters.html.erb

@@ -5,7 +5,7 @@
     </div>
 
     <div class="app-filter__content">
-      <%= form_with html: { method: :get } do |f| %>
+      <%= form_with url: scheme_locations_path(@scheme), html: { method: :get } do |f| %>
         <div class="govuk-grid-row" style="white-space: nowrap">
           <p class="govuk-grid-column-one-half">
             <%= filters_applied_text(@filter_type) %>