Bug: Using formula mode with total value bar chart in insights results in an error

[abigailbramble]

Bug Description

Bug description

If I create an insight with total value bar chart, this displays ok:

If I add in a simple formula, the following occurs:

Additional context

https://posthoghelp.zendesk.com/agent/tickets/17417 https://posthoghelp.zendesk.com/agent/tickets/17425

Debug info

No response