fix: base url in header image

src/utils/Url.ts

@@ -24,8 +24,11 @@ export const prefixWithBaseIfNotUrl = (
 ): string => {
   if (baseUrl) {
     const isExternalUrl = path.toLowerCase().startsWith("http");
+    const hasTrailingSlash = path.endsWith("/");
 
-    return isExternalUrl ? path : baseUrl + path;
+    return isExternalUrl
+      ? path
+      : `${baseUrl}${hasTrailingSlash ? "" : "/"}${path}`;
   }
   return path;
 };