diff --git a/covas_mobile/lib/pages/DisplayPictureScreen.dart b/covas_mobile/lib/pages/DisplayPictureScreen.dart
index 76a5fc3..b09ca67 100644
--- a/covas_mobile/lib/pages/DisplayPictureScreen.dart
+++ b/covas_mobile/lib/pages/DisplayPictureScreen.dart
@@ -87,38 +87,41 @@ class DisplayPictureScreenState extends State<DisplayPictureScreen>
   Future<void> searchEvents(String json, String imagePath) async {
     print(json.replaceAll("'''json", '').replaceAll("'''", ""));
     SharedPreferences prefs = await SharedPreferences.getInstance();
+    try {
+      Map<String, dynamic> jsonData =
+          jsonDecode(json.replaceAll("```json", '').replaceAll("```", ""));
+      print("json : ${jsonData}");
+      var name = jsonData["name"];
+      print("name : ${name}");
+      var place = jsonData["place"];
+      var accessToken = prefs.getString("access_token") ?? "";
 
-    Map<String, dynamic> jsonData =
-        jsonDecode(json.replaceAll("```json", '').replaceAll("```", ""));
-    print("json : ${jsonData}");
-    var name = jsonData["name"];
-    print("name : ${name}");
-    var place = jsonData["place"];
-    var accessToken = prefs.getString("access_token") ?? "";
+      if (accessToken.isNotEmpty) {
+        var urlGet = Uri.parse("${globals.api}/events?name=${name}");
 
-    if (accessToken.isNotEmpty) {
-      var urlGet = Uri.parse("${globals.api}/events?name=${name}");
-
-      var responseGet = await http.get(urlGet,
-          headers: {HttpHeaders.cookieHeader: 'access_token=${accessToken}'});
-      if (responseGet.statusCode == 200) {
-        var events = jsonDecode(utf8.decode(responseGet.bodyBytes));
-        print("reponse  http : ${events.length}");
-        if (events.length == 0) {
-          Navigator.push(
-              context,
-              MaterialPageRoute(
-                  builder: (_) => UpdateeventImage(
-                      events: jsonData, imagePath: imagePath)));
-        } else {
-          Navigator.push(
-              context,
-              MaterialPageRoute(
-                  builder: (_) => ItemMenu(title: events[0]["id"])));
+        var responseGet = await http.get(urlGet,
+            headers: {HttpHeaders.cookieHeader: 'access_token=${accessToken}'});
+        if (responseGet.statusCode == 200) {
+          var events = jsonDecode(utf8.decode(responseGet.bodyBytes));
+          print("reponse  http : ${events.length}");
+          if (events.length == 0) {
+            Navigator.push(
+                context,
+                MaterialPageRoute(
+                    builder: (_) => UpdateeventImage(
+                        events: jsonData, imagePath: imagePath)));
+          } else {
+            Navigator.push(
+                context,
+                MaterialPageRoute(
+                    builder: (_) => ItemMenu(title: events[0]["id"])));
+          }
         }
+      } else {
+        showErrorDialog(context, "Erreur de token");
       }
-    } else {
-      showErrorDialog(context, "Erreur de token");
+    } catch (e) {
+      showErrorDialog(context, "Erreur de format de donnée fourni par l'IA");
     }
 
     //showDescImageAddDialog(context, message);
diff --git a/covas_mobile/lib/pages/UpdateEventImage.dart b/covas_mobile/lib/pages/UpdateEventImage.dart
index c3e0bfa..cd32624 100644
--- a/covas_mobile/lib/pages/UpdateEventImage.dart
+++ b/covas_mobile/lib/pages/UpdateEventImage.dart
@@ -70,10 +70,16 @@ class _UpdateeventImageState extends State<UpdateeventImage>
     if (position == "end") {
       date = "end_date";
     }
+    DateTime dateEvent;
+    if (widget.events[date].toString().isEmpty) {
+      dateEvent = DateTime.now();
+    } else {
+      dateEvent = DateTime.parse(widget.events[date]);
+    }
     DateTime? pickedDate = await showDatePicker(
         context: context,
-        firstDate: DateTime.parse(widget.events[date]),
-        initialDate: DateTime.parse(widget.events[date]),
+        firstDate: dateEvent,
+        initialDate: dateEvent,
         lastDate: DateTime(2104));
     if (pickedDate == null) return;
     if (position == "start") {
@@ -90,10 +96,14 @@ class _UpdateeventImageState extends State<UpdateeventImage>
     if (position == "end") {
       date = "end_date";
     }
-    TimeOfDay? pickedDate = await showTimePicker(
-        context: context,
-        initialTime:
-            TimeOfDay.fromDateTime(DateTime.parse(widget.events[date])));
+    TimeOfDay timeEvent;
+    if (widget.events[date].toString().isEmpty) {
+      timeEvent = TimeOfDay.now();
+    } else {
+      timeEvent = TimeOfDay.fromDateTime(DateTime.parse(widget.events[date]));
+    }
+    TimeOfDay? pickedDate =
+        await showTimePicker(context: context, initialTime: timeEvent);
     if (pickedDate == null) return;
     if (position == "start") {
       startTimepicker.text = pickedDate.format(context);
@@ -274,16 +284,18 @@ class _UpdateeventImageState extends State<UpdateeventImage>
     inputName.text = convertNulltoEmptyString(widget.events["name"]);
     inputGeo.text = convertNulltoEmptyString(widget.events["place"]);
     inputDesc.text = convertNulltoEmptyString(widget.events["description"]);
-
-    DateTime pickedStartDate =
-        DateTime.parse(convertNulltoEmptyString(widget.events["start_date"]));
-    DateTime pickedEndDate =
-        DateTime.parse(convertNulltoEmptyString(widget.events["end_date"]));
-
-    startDatepicker.text = DateFormat("dd-MM-yyyy").format(pickedStartDate);
-    endDatepicker.text = DateFormat("dd-MM-yyyy").format(pickedEndDate);
-    startTimepicker.text = DateFormat("HH-mm").format(pickedStartDate);
-    endTimepicker.text = DateFormat("HH-mm").format(pickedEndDate);
+    if (widget.events["start_date"].toString().isNotEmpty) {
+      DateTime pickedStartDate =
+          DateTime.parse(convertNulltoEmptyString(widget.events["start_date"]));
+      startDatepicker.text = DateFormat("dd-MM-yyyy").format(pickedStartDate);
+      startTimepicker.text = DateFormat("HH-mm").format(pickedStartDate);
+    }
+    if (widget.events["end_date"].toString().isNotEmpty) {
+      DateTime pickedEndDate =
+          DateTime.parse(convertNulltoEmptyString(widget.events["end_date"]));
+      endDatepicker.text = DateFormat("dd-MM-yyyy").format(pickedEndDate);
+      endTimepicker.text = DateFormat("HH-mm").format(pickedEndDate);
+    }
     initialTags = List<String>.from(widget.events['tags'] as List);
     initialOrga = List<String>.from(widget.events['organizers'] as List);
   }