fix api 404 error (#1810)

Signed-off-by: Eric <menwe@amazon.com>
(cherry picked from commit 441168e)
Signed-off-by: github-actions[bot] <github-actions[bot]@users.noreply.github.com>

server/routes/data_connections/data_connections_router.ts

@@ -181,6 +181,29 @@ export function registerDataConnectionsRoute(router: IRouter, dataSourceEnabled:
     }
   );
 
+  router.get(
+    {
+      path: `${DATACONNECTIONS_BASE}`,
+      validate: false,
+    },
+    async (context, request, response): Promise<any> => {
+      try {
+        const dataConnectionsresponse = await context.observability_plugin.observabilityClient
+          .asScoped(request)
+          .callAsCurrentUser('ppl.getDataConnections');
+        return response.ok({
+          body: dataConnectionsresponse,
+        });
+      } catch (error: any) {
+        console.error('Issue in fetching data sources:', error);
+        return response.custom({
+          statusCode: error.statusCode || 500,
+          body: error.response,
+        });
+      }
+    }
+  );
+
   router.get(
     {
       path: `${DATACONNECTIONS_BASE}/dataSourceMDSId={dataSourceMDSId?}`,