diff -u b/core/modules/breakpoint/lib/Drupal/breakpoint/BreakpointGroup.php b/core/modules/breakpoint/lib/Drupal/breakpoint/BreakpointGroup.php
--- b/core/modules/breakpoint/lib/Drupal/breakpoint/BreakpointGroup.php
+++ b/core/modules/breakpoint/lib/Drupal/breakpoint/BreakpointGroup.php
@@ -167,15 +167,12 @@
         }
         break;
       case Breakpoint::SOURCE_TYPE_MODULE:
-          $reloaded_group = breakpoint_group_reload_from_module($this->source, $this->id());
-          if ($reloaded_group) {
-            $this->breakpoints = $reloaded_group->breakpoints;
-            $this->overridden = FALSE;
-            $this->save();
-          }
-          else {
-            throw new \Exception("something went wrong :s");
-          }
+        $reloaded_group = breakpoint_group_reload_from_module($this->source, $this->id());
+        if ($reloaded_group) {
+          $this->breakpoints = $reloaded_group->breakpoints;
+          $this->overridden = FALSE;
+          $this->save();
+        }
         break;
     }
     return $this;