Please update to redmine version 3.4.2.

[morevalar]

Hi! Calendar is broken in redmine version 3.4.2

[aminemzid]

Hi @morevalar,
We will check and try to fix it.
@fouratachour can you take charge of this issue ? thks !

[fouratachour]

Thank you for your feedback.
I will check it as soon as possible !