Date/time in Table Field in Matrix without default throws system-wide exception

[jacotijssen]

Description

Creating a date/time column within a Table Field within a Matrix Block without a default table row throws an exception. After this, any page in the backend becomes unreachable.

Steps to reproduce

1. Create a Matrix field
2. Create a Table field within the matrix field
3. Set one of the columns to a Date/Time type
4. Delete the default row
5. Save the field

Additional info

• Craft version: 3.1.18
• PHP version: 7.2.15
• Database driver & version: MySQL 5.7.24
• Plugins & versions: none

[brandonkelly]

Thanks for reporting that. It’s been fixed for tomorrow’s release.

To get the fix early, change your craftcms/cms requirement in composer.json to:

"require": {
  "craftcms/cms": "dev-develop#a02c552f61f5ab5dcc193f5603a98caa0b997a85 as 3.1.18",
  "...": "..."
}

Then run composer update.