"Online Store Editor Session Can't Be Published" Message

[Carpinus]

Good morning!

Tried to implement the piece of custom code in the online theme editor but it keeps saying "Online Store editor session can't be published" every time I tried to save the theme.

I already tried:

- using different browser

- using incognito mode

- using different device

- tried on the older themes

- cleared cache, history etc.

- deleted all the sections from the template in the online editor 

- searched 10+ threads here in the community

Code that I am adding:

button[data-add-to-cart]:after {
content: "Buy Similar";
display: block;
}
button[data-add-to-cart] > span {
display: none;
}

I need to change the wording "Add to cart" on one of the product templates - we are a flower shop and need it to say "Buy Similar" for certain seasonal products

THANK YOU SO MUCH!!!

[ScarletBomaomao]

Do you know how to deal with that?