added exceptions for json parsing erro

evidence/forms.py

@@ -37,6 +37,8 @@ class UploadForm(forms.Form):
                 if exist_annotation:
                     raise ValidationError("error: {} exist".format(file_name))
 
+            except ValueError:
+                raise ValidationError("Error in parsing JSON: {}. Check for file corruption.".format(file_name))
             except Exception:
                 raise ValidationError("error in: {}".format(file_name))
 

evidence/management/commands/up_snapshots.py

@@ -47,10 +47,16 @@ class Command(BaseCommand):
                 self.open(filepath)
 
     def open(self, filepath):
+        try:
             with open(filepath, 'r') as file:
                 content = json.loads(file.read())
                 path_name = save_in_disk(content, self.user.institution.name)
                 self.snapshots.append((content, path_name))
+        except json.JSONDecodeError:
+            raise ValueError(f"Invalid JSON format in file {filepath}.")
+        #or we cath'em all
+        except Exception as e:
+            raise Exception(f"Oops! Something went wrong there")
 
     def parsing(self):
             for s, p in self.snapshots: