Error in publishing customization

Hi
I have installed Sydeny Pro on a fresh new website.
When I try publish customization it gives me error “Looks like something’s gone wrong. Wait a couple seconds, and then try again. ”
I have disabled all plugins – didnt work
I have deleted the site and created a new one – didnt work
When I change to differant theme- the publish buttom works fine.

Website: https://igotell.org/
Wordpress V: 5.9.3
Sydney Pro V: 3.0.5

Help please

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