Removing timer doesn't work

[Overgrow (OG)]

I’ve got auto-close set after 48 hours since last post on a topic.

When I try to remove timer it displays this error:

I’m on the latest core.

[sam (Sam Saffron)]

@vinothkannans can you investigate?

Reproduces here:

[vinothkannans (Vinoth Kannan)]

This is fixed in the commit

https://github.com/discourse/discourse/commit/37bf38f801408035c53faeb8667c445d6f5e48e6