data update is freeze in fiori lanchpad

Hello

In my fiori lanchpad I create some tile. The data received from the HANA 2.0 system

through the oDATA service.The lanchpadis opened and data is displayed in tile.

But after a while the update is stoped.

I Clear metadata cache, local browser cache, Clear the server side caches

The lanchpad is started in Intenet Explorer 11.0

What is wrong?

regards