Implemented null casing.

Added null casing to the SidebarLink to check if the properties that are going
to be added to the search params actually exists and we're not trying to access
empty objects.

dashboard/src/main/home/sidebar/SidebarLink.tsx

@@ -18,20 +18,27 @@ const SidebarLink: React.FC<{ path: string } & Omit<NavLinkProps, "to">> = ({
    */
   const withQueryParams = (path: string) => (location: any) => {
     let pathNamespace = params.namespace;
-    let search = `?cluster=${currentCluster.name}&project_id=${currentProject.id}`;
+    const search = new URLSearchParams();
+    if (currentCluster?.name) {
+      search.append("cluster", currentCluster.name);
+    }
+
+    if (currentProject?.id) {
+      search.append("project_id", String(currentProject.id));
+    }
 
     if (!pathNamespace) {
       pathNamespace = getQueryParam("namespace");
     }
 
     if (pathNamespace) {
-      search = search.concat(`&namespace=${pathNamespace}`);
+      search.append("namespace", pathNamespace);
     }
 
     return {
       ...location,
       pathname: path,
-      search,
+      search: search.toString(),
     };
   };