Prod upload fix

assets/js/media-admin.js

@@ -103,23 +103,10 @@
                 }
             });
 
-            var contentType = response.headers.get('content-type') || '';
-            var raw = await response.text();
-            var payload = {};
-
-            if (contentType.indexOf('application/json') !== -1) {
-                try {
-                    payload = JSON.parse(raw);
-                } catch (parseError) {
-                    payload = {};
-                }
-            }
+            var payload = await response.json();
 
             if (!response.ok) {
-                throw new Error(
-                    payload.error
-                    || ('HTTP ' + response.status + (raw ? ' - ' + raw.slice(0, 180) : ''))
-                );
+                throw new Error(payload.error || 'Le téléversement a échoué.');
             }
 
             setFeedback('Image téléversée. Rafraîchissement…', false);