Undefined index: uriParts in Routes.php:40

[loqus]

Description

I got an
Undefined index: uriParts in ...vendor/craftcms/cms/src/web/twig/variables/Routes.php:40
When accessing the routes configuration in the admin.
I couldn't figure out where this was coming from.

Steps to reproduce

1. Go to settings/routes/ in admin
2. Get error in screen
3. Look at web.log

Additional info

• Craft version: Craft Pro 3.2.7
• PHP version: 7.2.20
• Database driver & version: MySQL 5.5.60
• Plugins & versions:

Feed Me | 4.1.1
Asset Usage | 2.0.1
Redactor | 2.3.3.2
Image Resizer | 2.0.5

possible solution for me (to show page again)

Was to add an if(isset($route['uriParts'])){} around
foreach ($route['uriParts'] as $part){}