onPageMapClear: Uncaught TypeError: Cannot convert null to object

[NexusOne]

Uncaught TypeError: Cannot convert null to object (ext-all-debug.js:67570)

onPageMapClear: function() {
        var me = this,
            loadingFlag = me.wasLoading,
            reqs = me.pageRequests,
            req,
            page;

        // If any requests return, we no longer respond to them.
        if (me.data.events.pageadded) {
            me.data.events.pageadded.clearListeners();
        }

        // If the page cache gets cleared it's because a full reload is in progress.
        // Setting the loading flag prevents linked Views from displaying the empty text
        // during a load... we don't know whether ther dataset is empty or not.
        me.loading = true;
        me.totalCount = 0;

        // Cancel all outstanding requests
        for (page in reqs) {
            if (reqs.hasOwnProperty(page)) {
                req = reqs[page];
                delete reqs[page]; //delete req
                delete req.callback; //trying to delete req.callback     

            }
        }

        // This will update any views. 
        me.fireEvent('clear', me);

        // Restore loading flag. The beforeload event could still veto the process.
        // The flag does not get set for real until we pass the beforeload event.
        me.loading = loadingFlag;
    },

[NexusOne]

Ooops... This is not the reason.

I have buffered store with remoteFilter = true. So if I make this steps

store.clearFilter();
store.filter({ property: field, value: val, anyMatch: true });

I'e got Uncaught TypeError: Cannot convert null to object.
In some reason reqs[page] is undefined, after I call clearFilter

[iorlas]

Same issue.
Solved temporary with setting

suppressEvent = true

For example:

        @getView().organizationsStore.clearFilter(true)  # clear previous filters
        if @getSearchField().getValue() != ''
            @getView().organizationsStore.filter('name', @getSearchField().getValue())
        @getView().organizationsStore.load()  # load with defined filters

[Sharkanana]

A simple workaround is to:

// Cancel all outstanding requests
                for (page in reqs)
                {
                    if (reqs.hasOwnProperty(page))
                    {
                        req = reqs[page];
                        delete reqs[page];
                        if(req)
                            delete req.callback;
                    }
                }