Failed to fetch

[rocky3xr]

TypeError: Failed to fetch 
 While processing action: 
 function (dispatch, getState, api) {
    return api.geth.eth.getSyncing().then(function (result) {
      if ((typeof result === 'undefined' ? 'undefined' : _typeof(result)) === 'object') {
        return dispatch({
          type: _actionTypes2.default.SYNCING,
          syncing: true,
          status: result
        });
      }

      dispatch({
        type: _actionTypes2.default.SYNCING,
        syncing: false
      });
    });
  }