what was the most recent change done related to or in your theme?

for theme specific support, start a new topic in the theme’s support forum.
https://wordpress.org/support/theme/colormag/

• This reply was modified 5 days, 18 hours ago by lisa.

1-in which template file was the change made — something like header.php?
maybe some code was accidentally changed/deleted while you were adding code snippet?

2-might be best to get guidance from theme support team
for theme specific support, start a new topic in the theme’s support forum.
https://wordpress.org/support/theme/colormag/