Server error when sending a newsletter

[carolromero]

Describe the bug
When I want to select the recipients of a newsletter, I get a server error.

To Reproduce
Steps to reproduce the behavior:

1. Go to admin/newsletters and clic on 'New newsletter'
2. Select a newsletter template
3. Fill in the title and body fields and save
4. Clic on 'Select recipients to deliver'
5. See error

Expected behavior
I would expect to be able to select the recipients and send the newsletter.

Screenshots

Extra data (please complete the following information):

• Device: Desktop
• Device OS: Ubuntu 20.04
• Browser: Firefox
• Decidim Version: 0.24.0.rc2
• Decidim installation: MetaDecidim

Additional context
Add any other context about the problem here. For instance, add Metadecidim link.

[oriolgual]

Possible related backtraces:

https://sentry.io/share/issue/5f38f741c33b4ac38e18ce3183e85a81/
https://sentry.io/share/issue/e45497faca1644c9a3922b7f49307163/

[oriolgual]

When a space doesn't have the title in the current locale the newsletter_helper.rb crashes at line 105: https://github.com/decidim/decidim/blob/develop/decidim-admin/app/helpers/decidim/admin/newsletters_helper.rb#L105

[ahukkanen]

This is related to the elections module has been fixed by #9188 which will be included in 0.27.0 and will be backported to the next 0.26 point release.

Closing this. Feel free to reopen if the issue persists in 0.27.0.rc1 or at develop.