Undefined array key "colPos"

[oooFreaKooo]

I came across an issue, which killed my entire Project for some reason.
This is the error message i got:

(1/1) #1476107295 TYPO3\CMS\Core\Error\Exception
PHP Warning: Undefined array key "colPos" in /var/www/html/vendor/friendsoftypo3/headless/Classes/ContentObject/JsonContentContentObject.php line 186

I got the issue fixed by adjusting the code:

• Inside: vendor\friendsoftypo3\headless\Classes\ContentObject\JsonContentContentObject.php
• Line 185 was changed
• From: if ($groupingEnabled && ($element['colPos'] ?? 0) >= 0) {
• To: if ($groupingEnabled && isset($element['colPos']) && $element['colPos'] >= 0) {

Im not sure why this error started accuring suddenly. But for now it has been fixed.

[twoldanski]

Hi @oooFreaKooo this not a bug but misconfiguration, you can have colpos aka grouping of content elements enabled (and column is required) or not, but can't have both ways on the same page.