Fix EntityToJsonTransformer for saved exports

.changes/v3.5.3.md

@@ -0,0 +1,3 @@
+## v3.5.3 - 2025-01-07
+### Fixed
+* Fix the EntityToJsonTransformer to return an empty array if the value is "" 

CHANGELOG.md

@@ -6,6 +6,10 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html),
 and is generated by [Changie](https://github.com/miniscruff/changie).
 
 
+## v3.5.3 - 2025-01-07
+### Fixed
+* Fix the EntityToJsonTransformer to return an empty array if the value is "" 
+
 ## v3.5.2 - 2024-12-19
 ### Fixed
 * ([#345](https://gitlab.com/Chill-Projet/chill-bundles/-/issues/345)) Export: activity filtering of users that were associated to an activity between certain dates. Results contained activities that were not within the specified date range" 

src/Bundle/ChillMainBundle/Form/Type/DataTransformer/EntityToJsonTransformer.php

@@ -28,8 +28,8 @@ class EntityToJsonTransformer implements DataTransformerInterface
 
     public function reverseTransform($value)
     {
-        if (false === $this->multiple && '' === $value) {
-            return null;
+        if ('' === $value) {
+            return $this->multiple ? [] : null;
         }
 
         if ($this->multiple && [] === $value) {