Error: Maximum call stack size exceeded in QA site

[sailakumari_pay]

We are seeing below error on our qa site from utag.js.

Does anyone one know what might be causing error?

Error trying to convert data layer: RangeError: Maximum call stack size exceeded

Error coming from below code in utag.js

 for (var n = 0; n < obj.length; n++) {
                        if ((typeof obj[n]).match(/boolean|string|number/)) {
                            if (typeof b[new_key_name] === "undefined") {
                                b[new_key_name] = [];
                            }
                            b[new_key_name].push("" + obj[n]);
                        } else if (typeOf(obj[n]) === 'object') {
                            Object.keys(obj[n]).forEach(function(array_key) {
                                var new_obj = obj[n];
                                array_key_name = new_key_name + array_key;
                                if (typeof new_obj[array_key] !== 'undefined' && new_obj[array_key] != null) {
                                    if ((typeof new_obj[array_key]).match(/boolean|string|number/) && !ignoreKey(array_key)) {
                                        if (typeof b[array_key_name] === "undefined") {
                                            b[array_key_name] = [];
                                        }
                                        b[array_key_name].push("" + new_obj[array_key]);
                                    } else if (typeOf(new_obj[array_key]) === 'array') {
                                        processDataArray(new_obj[array_key], array_key_name);
                                    }
                                }
                            });
                        }
                    }
                }
                function typeOf(e) {
                    return ({}).toString.call(e).match(/\s([a-zA-Z]+)/)[1].toLowerCase();
                }
                processDataObject(b);
            } catch (e) {
                try {
                    console.log('Error trying to convert data layer: ' + e);
                } catch (e) {}
            }
        }
        , function(a, b) {

[steve_lake]

@sailakumari_pay, I think that is some kind of datalayer conversion extension code, by the looks of it.  

It may be that the data layer that is trying to be converted is too big, has an error in it, or is too many layers deep for the code to sensibly handle and is running out of memory. 

If it's just on one page, my suggestion would be to check that the data layer itself doesn't have a syntax error or similar that can be easily resolved. 

Otherwise, it's would be worth raising a support ticket and get a support engineer to take a look for you

Many thanks

Steve Lake

[sailakumari_pay]

@steve_lake

Thank you for your reply !

We found the issue,its because of some error in datalayer