clicking add item opens a blank page

[sonicfive]

If I click on "add item" I am getting a blank browser document. The modal window is no longer working. Already tested different browsers.

MODX Revolution 2.4.0-pl MIGX 2.9.0-pl

I am not sure if updating migx will break anything on live site. Already cleared cache, etc.

[Bruno17]

what are your MIGX - configs?

[sonicfive]

Form tabs: [ {"caption":"Title and Link", "fields": [ {"field":"title","caption":"Title"}, {"field":"link","caption":"Link"}, {"field":"description","caption":"Description","inputTVtype":"textarea"} ]}, {"caption":"Image", "fields":[

Grid columns: [ {"header": "Title", "width": "160", "sortable": "true", "dataIndex": "title"}, {"header": "Image", "width": "50", "sortable": "false", "dataIndex": "image","renderer": "this.renderImage"}, {"header": "Link", "width": "100", "sortable": "true", "dataIndex": "link"}, {"header": "Description", "width": "300", "sortable": "true", "dataIndex": "description"} ]

[Bruno17]

this looks not complete:

[ {"caption":"Title and Link", "fields": [ {"field":"title","caption":"Title"}, {"field":"link","caption":"Link"}, {"field":"description","caption":"Description","inputTVtype":"textarea"} ]}, {"caption":"Image", "fields":[

[sonicfive]

Bruno, It does not look complete, because I copied it wrong. The current form TABS validates well on json lint.

When I click on add item I get a new page with this: https://www.dropbox.com/s/7ymi83hlna7xeyb/Screenshot%202017-06-26%2016.53.41.png?dl=0

[Bruno17]

would you like to show me your complete formtabs?

[robliberty]

Most likely you have an extra comma where one shouldn't be, or you're missing one. An additional trailing comma on the last item is usually my culprit.

[deckchairlabs]

Also having the same issue, the grid renders, but with blank values, the 'Add Item' interface is blank, but allows saving new records.

PHP 7.1 - 7.0 MODX 2.5.8 MIGX 2.11.0