When in preview of my main power page in the header section is shown the following error message:
Tag '{%' was not properly terminated with regexp: (?-mix:\%\})
Any help it would be appreciate to fix this.
Tks.

When in preview of my main power page in the header section is shown the following error message:
Tag '{%' was not properly terminated with regexp: (?-mix:\%\})
Any help it would be appreciate to fix this.
Tks.
Liquid uses {% <liquid command> %} you appear to have put something in that is not closing the liquid correctly with a "%}"