Strange symbols appear at the bottom of the site?

Question

JavaScript

Strange characters appear on a WordPress site.
Below the footer it says " }catch (ex){}55082164"
Located in the body

Answer 1

Apparently the tag was closed before the desired one. catch refers to a block with a try </script>

Answer 2

No, I was configured to display additional JS in the Footer through a theme.
I removed this entry completely.
Now there are just numbers, there is no script.
These numbers are not available anywhere...