DS09 : Conflict resolution, and other

plotting.py

@@ -135,17 +135,23 @@ def worker_thread(base_dir, files_to_process, all_labels):
                 print(f"Buffering {img_path.name}...")
                 (pil_image, last_label_index) = \
                     prepare_image(str(img_path), bb_list, all_labels, nb_pages, last_label_index)
-
-                metadata = {
-                    "copie": copie,
-                    "part": copie_part,
-                    "schema": json_schema,
-                    "name": json_name
-                }
+                error_msg = None
 
                 image_queue.put((pil_image, json_path, metadata))
             except Exception as e:
                 print(f"Error processing {img_path.name}: {e}")
+                pil_image = Image.open(str(img_path))
+                error_msg = str(e)
+
+            metadata = {
+                "copie": copie,
+                "part": copie_part,
+                "schema": json_schema,
+                "name": json_name,
+                "error": error_msg
+            }
+
+            image_queue.put((pil_image, json_path, metadata))
 
     # Sentinel to indicate finished
     image_queue.put((None, None, None))
@@ -271,6 +277,10 @@ class ImageViewer:
         self.is_viewing = True
         self.root.lift()
 
+        if metadata.get("error"):
+            msg = f"Error generating boxes for {json_path.name}:\n\n{metadata['error']}\n\nPlease press 'e' to fix the JSON file, then press Enter to retry."
+            messagebox.showerror("Processing Error", msg)        
+
     def on_enter(self, event):
         if self.is_viewing:
             print(f"Committing data for {self.current_json_path.name}...")