loss of new posts about wordpress-sandstorm HOT 4 OPEN

ERROR: The server threw an exception. Details:

(remote):0: failed: remote exception: remote exception: remote exception: Error: Requested session that no longer exists, and timed out waiting for client to restore it. This can happen if you have opened an app's content in a new window and then closed it in the UI. If you see this error *inside* the Sandstorm UI, please report a bug and describe the circumstances of the error.
    at Meteor.setTimeout (server/gateway-router.js:287:18)
    at Meteor.EnvironmentVariable.EVp.withValue (packages/meteor.js:1304:12)
    at packages/meteor.js:620:25
    at runWithEnvironment (packages/meteor.js:1356:24)
 => awaited here:
    at Promise.await (/programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/promise_server.js:60:12)
    at inMeteor (server/gateway-router.js:268:23)
    at inMeteorInternal (imports/server/async-helpers.js:24:17)
    at Meteor.bindEnvironment.callback (imports/server/async-helpers.js:12:3)
    at runWithEnvironment (packages/meteor.js:1356:24)
    at packages/meteor.js:1369:14
    at Promise (imports/server/async-helpers.js:22:5)
    at new Promise (<anonymous>)
    at inMeteor (imports/server/async-helpers.js:21:10)
    at GatewayRouterImpl.openUiSession (server/gateway-router.js:266:12)
    at /node_modules/capnp.js:174:21
    at /programs/server/npm/node_modules/meteor/promise/node_modules/meteor-promise/fiber_pool.js:43:40
stack: 7f4900 4676f0 458bb0 459008 458a9d 57dd91 468140 5681c0 569530 5678e0 680e60 67bd00 5678e0 435e10 42e1e0 4b5920 4b8b70