Records within an Opportunity are blank when using left menu and selecting from list

**yuri** · 10-31-2018, 08:10 PM

When a record is opened from the list, it's displayed with the data available at that moment, then more data is fetched from the backend and rendered. Due some reason additional data is not rendered or not fetched.

There might be errors logged in browser console.

**WMEspo** · 10-31-2018, 09:07 PM

Yes you were right there is a console error, this is the error:

Code:

VM5086:117 Uncaught TypeError: Cannot read property 'preventLoop' of null
    at child.eval (eval at _execute (espo.min.js?r=1540938408:17), <anonymous>:117:27)
    at triggerEvents (espo.min.js?r=1540938408:5)
    at triggerApi (espo.min.js?r=1540938408:5)
    at eventsApi (espo.min.js?r=1540938408:5)
    at child.Events.trigger (espo.min.js?r=1540938408:5)
    at child.set (espo.min.js?r=1540938408:5)
    at child.set (espo.min.js?r=1540938408:17)
    at child.eval (eval at _execute (espo.min.js?r=1540938408:17), <anonymous>:113:40)
    at triggerEvents (espo.min.js?r=1540938408:5)
    at triggerApi (espo.min.js?r=1540938408:5)

**yuri** · 10-31-2018, 09:18 PM

Looks like that you have code not existing in EspoCRM codebase. Maybe a virus or some extension that modifies js files. Not sure.

**yuri** · 10-31-2018, 09:22 PM

Would be helpful to see the code where the error occurs. Where 'preventLoop' property is tried to be read.

**WMEspo** · 11-02-2018, 03:57 PM

I'm not sure exactly what you're asking for, and you'll have to excuse me I am terrible at troubleshooting JavaScript. I am much more comfortable with PHP. This is the code snippet that is failing:

Code:

this.listenTo(this.currencyModel, 'change:currency', function (model, o) {
                    if (o.preventLoop) return;
                    this.model.set('amountCurrency', model.get('currency'), {ui: true});
                }, this);

Which is in client/modules/advanced/src/views/opportunity/fields/item-list.js at line 116
and a part of:
Espo.require(calculationHandlerClassName, function (CalculationHandler) {
It seems o is NULL so that the property preventLoop doesn't exist.

I have not modified any of the code, especially the js portion. The only modifications I make are to the custom entityDefs, and I think maybe clientDefs.

Let me know if you need anything else. Thanks.

**yuri** · 11-02-2018, 04:22 PM

You can modify that line:

if (o && o.preventLoop) return;

And then clear cache in Administration.

I will take a look and fix. Thanks.

**yuri** · 11-02-2018, 04:30 PM

One more possible solution:

Add Amount field to the list layout for opportunity.

**WMEspo** · 11-02-2018, 09:28 PM

After modifying to

Code:

if (o && o.preventLoop) return;

I can no longer get this error to happen.

Thank you for all your help!!

Records within an Opportunity are blank when using left menu and selecting from list

Records within an Opportunity are blank when using left menu and selecting from list

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