From bccf14bcebfc3f1b5db2230702369b0b5b1260fe Mon Sep 17 00:00:00 2001
From: shaohuzhang1 <80892890+shaohuzhang1@users.noreply.github.com>
Date: Fri, 10 Oct 2025 11:07:08 +0800
Subject: [PATCH] fix: The discriminator is empty and the judgment is incorrect
 (#4166)

---
 apps/application/flow/compare/is_null_compare.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/apps/application/flow/compare/is_null_compare.py b/apps/application/flow/compare/is_null_compare.py
index c2b1769c8..09c115c98 100644
--- a/apps/application/flow/compare/is_null_compare.py
+++ b/apps/application/flow/compare/is_null_compare.py
@@ -18,4 +18,7 @@ class IsNullCompare(Compare):
             return True
 
     def compare(self, source_value, compare, target_value):
-        return source_value is None or len(source_value) == 0
+        try:
+            return source_value is None or len(source_value) == 0
+        except Exception as e:
+            return False