Better error handling when unable to read metadata from safetensors file

modules/sd_models.py

@@ -280,10 +280,12 @@ def read_metadata_from_safetensors(filename):
         json_start = file.read(2)
 
         assert metadata_len > 2 and json_start in (b'{"', b"{'"), f"{filename} is not a safetensors file"
-        json_data = json_start + file.read(metadata_len-2)
-        json_obj = json.loads(json_data)
 
         res = {}
+
+        try:
+            json_data = json_start + file.read(metadata_len-2)
+            json_obj = json.loads(json_data)
             for k, v in json_obj.get("__metadata__", {}).items():
                 res[k] = v
                 if isinstance(v, str) and v[0:1] == '{':
@@ -291,6 +293,8 @@ def read_metadata_from_safetensors(filename):
                         res[k] = json.loads(v)
                     except Exception:
                         pass
+        except:
+             errors.report(f"Error reading metadata from file: {filename}", exc_info=True)
             
         return res