Blog List Folder Name Error

I am trying to save a folder with the title 2022, but I keep getting a recurring error that is invalid. Any help would be appreciated, the code is below:

title: '2022'
child_type: blog_item
visible: true
content:
items: - '@self.children'
leading: 0
columns: 2
limit: -1
order:
by: date
dir: desc
show_date: '1'
pagination: '1'
url_taxonomy_filters: '1'

Start by reproducing the error in the Grav Admin interface with the folder configuration shown in the issue, especially the title 2022 and blog_item child type. Trace the validation or save path reached by that configuration; done means the folder saves successfully without an invalid-folder error.

Written by the indexing model from the issue text.