Revert "Throw exception if relationship not found"

This reverts commit 903c8cf.

packages/tables/src/Grouping/Group.php

@@ -6,7 +6,6 @@
 use Carbon\Carbon;
 use Carbon\CarbonInterface;
 use Closure;
-use Exception;
 use Filament\Support\Components\Component;
 use Filament\Support\Contracts\HasLabel as LabelInterface;
 use Filament\Tables\Table;
@@ -413,11 +412,9 @@ public function getRelationship(Model $record, ?string $name = null): ?Relation
             return null;
         }
 
-        $relationshipName = $name ?? $this->getRelationshipName();
-
         $relationship = null;
 
-        foreach (explode('.', $relationshipName) as $nestedRelationshipName) {
+        foreach (explode('.', $name ?? $this->getRelationshipName()) as $nestedRelationshipName) {
             if (! $record->isRelation($nestedRelationshipName)) {
                 $relationship = null;
 
@@ -428,10 +425,6 @@ public function getRelationship(Model $record, ?string $name = null): ?Relation
             $record = $relationship->getRelated();
         }
 
-        if (! $relationship) {
-            throw new Exception("The relationship [{$relationshipName}] does not exist on the model [{$record}].");
-        }
-
         return $relationship;
     }