Can't save link field in matrix in Craft 3.4

[ryanmwc]

I updated to Craft 3.4.0.2 from 3.3.x this morning and tried adding a linkfield to a matrix block, but I get this error in the web log:

yii\base\ErrorException:1] yii\base\ErrorException: Unknown: Input variables exceeded 1000. To increase the limit change max_input_vars in php.ini. in /Users/me/Sites/mySite/vendor/yiisoft/yii2/base/ErrorException.php:43

It only happens in a matrix field. I tested creating a linkfield as its own custom field and everything was fine.

[sebastian-lenz]

Hi @ryanmwc and thanks for reporting this. I've checked both v1 and v2 of this plugin in Craft 3.4.1 and the both seem to function well within matrix fields. Could you

• check whether the issue still exists with the latest version of Craft 3.4
• if so, give additional details on how to reproduce the issue

[ryanmwc]

@sebastian-lenz I've discovered that it happens even if just trying to add a new block type to this matrix field with a plain text field. It might be a Craft bug or it could be something with my setup after going through the 3.3.x to 3.4 update. I posted an issue in Craft's issues: craftcms/cms#5554

I'll trying testing with more variations and reply back when I get it sorted.

[ryanmwc]

Looks like an error on my end from just making such a large matrix field:
craftcms/cms#5554