From c8555953a181163472fe4dfe29a7bf0d9a0c0162 Mon Sep 17 00:00:00 2001
From: Chen Chen <34592639+envestcc@users.noreply.github.com>
Date: Mon, 26 Aug 2024 12:08:40 +0800
Subject: [PATCH] [api] Fix parsing of log filter (#4376)

---
 api/web3server_utils.go | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/api/web3server_utils.go b/api/web3server_utils.go
index 773eaff04e..392d966420 100644
--- a/api/web3server_utils.go
+++ b/api/web3server_utils.go
@@ -254,15 +254,15 @@ func parseLogRequest(in gjson.Result) (*filterObject, error) {
 			logReq.Address = append(logReq.Address, addr.String())
 		}
 		for _, topics := range req.Get("topics").Array() {
+			var topicArr []string
 			if topics.IsArray() {
-				var topicArr []string
 				for _, topic := range topics.Array() {
 					topicArr = append(topicArr, util.Remove0xPrefix(topic.String()))
 				}
-				logReq.Topics = append(logReq.Topics, topicArr)
-			} else {
-				logReq.Topics = append(logReq.Topics, []string{util.Remove0xPrefix(topics.String())})
+			} else if str := topics.String(); str != "" {
+				topicArr = append(topicArr, util.Remove0xPrefix(str))
 			}
+			logReq.Topics = append(logReq.Topics, topicArr)
 		}
 	}
 	return &logReq, nil