diff --git a/app/lib/actions/proxy_action.rb b/app/lib/actions/proxy_action.rb
index 6d9cf9a41..05e73daf6 100644
--- a/app/lib/actions/proxy_action.rb
+++ b/app/lib/actions/proxy_action.rb
@@ -22,7 +22,15 @@ def backtrace
       end
     end
 
-    class ProxyActionStopped; end
+    class ProxyActionStopped < RuntimeError
+      def backtrace
+        []
+      end
+    end
+
+    ProxyActionStoppedEvent = ::Algebrick.type do
+      fields! exception: type { variants NilClass, Exception }
+    end
 
     def plan(proxy, klass, options)
       options[:connection_options] ||= {}
@@ -52,8 +60,8 @@ def run(event = nil)
           on_data(event.data, event.meta)
         when ProxyActionMissing
           on_proxy_action_missing
-        when ProxyActionStopped
-          on_proxy_action_stopped
+        when ProxyActionStoppedEvent
+          on_proxy_action_stopped(event)
         else
           raise "Unexpected event #{event.inspect}"
         end
@@ -94,6 +102,8 @@ def check_task_status
       else
         suspend
       end
+    rescue RestClient::NotFound
+      on_proxy_action_missing
     end
 
     def cancel_proxy_task
@@ -133,8 +143,12 @@ def on_proxy_action_missing
       error! ProxyActionMissing.new(_('Proxy task gone missing from the smart proxy'))
     end
 
-    def on_proxy_action_stopped
-      check_task_status
+    def on_proxy_action_stopped(event)
+      if event.exception
+        error! ProxyActionStopped.new(_('Failed to trigger task on the smart proxy: ') + event.exception.message)
+      else
+        check_task_status
+      end
     end
 
     # @override String name of an action to be triggered on server
diff --git a/app/lib/actions/trigger_proxy_batch.rb b/app/lib/actions/trigger_proxy_batch.rb
index a587fc85b..72cd5aade 100644
--- a/app/lib/actions/trigger_proxy_batch.rb
+++ b/app/lib/actions/trigger_proxy_batch.rb
@@ -42,7 +42,10 @@ def trigger_remote_tasks_batch
     rescue => e
       action_logger.warn "Could not trigger task on the smart proxy"
       action_logger.warn e
-      batch.each { |remote_task| remote_task.update_from_batch_trigger({}) }
+      # The response contains non-serializable objects
+      # TypeError: no _dump_data is defined for class Monitor
+      e.response = nil
+      batch.each { |remote_task| remote_task.update_from_batch_trigger({ 'exception' => e }) }
       output[:failed_count] += batch.size
     end
 
diff --git a/app/models/foreman_tasks/remote_task.rb b/app/models/foreman_tasks/remote_task.rb
index 68453e17f..830591ced 100644
--- a/app/models/foreman_tasks/remote_task.rb
+++ b/app/models/foreman_tasks/remote_task.rb
@@ -49,10 +49,11 @@ def update_from_batch_trigger(data, parent = {})
         self.parent_task_id = parent['task_id']
         self.state = 'parent-triggered'
       else
+        exception = data['exception']
         # Tell the action the task on the smart proxy stopped
         ForemanTasks.dynflow.world.event execution_plan_id,
                                          step_id,
-                                         ::Actions::ProxyAction::ProxyActionStopped.new,
+                                         ::Actions::ProxyAction::ProxyActionStoppedEvent[exception],
                                          optional: true
       end
       save!