From 0c9e4f06580adf8f577b8db4fb3b802a9e60ef13 Mon Sep 17 00:00:00 2001
From: Cytown <cytown@gmail.com>
Date: Fri, 27 Mar 2026 20:49:51 +0800
Subject: [PATCH] fix for FlexibleStringSlice cause picoclaw start crash issue
 (#2078)

---
 pkg/config/config.go | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/pkg/config/config.go b/pkg/config/config.go
index 2780fb401..d2ff000a8 100644
--- a/pkg/config/config.go
+++ b/pkg/config/config.go
@@ -53,7 +53,13 @@ func (f *FlexibleStringSlice) UnmarshalJSON(data []byte) error {
 	// Try []interface{} to handle mixed types
 	var raw []any
 	if err := json.Unmarshal(data, &raw); err != nil {
-		return err
+		var s string
+		// fail over to compatible to old format string
+		if err = json.Unmarshal(data, &s); err != nil {
+			return err
+		}
+		*f = []string{s}
+		return nil
 	}
 
 	result := make([]string, 0, len(raw))