When I tried to use google-translate.el, I got a Failed to search TKK error.
And according to this page the error caused by bug#11788.
So I have to upgrade Emacs 26 or apply the patch. But latest emacs in MacOS is 25.2. And I cound't find where is the *.el files for the patch.
How can I avoid this issue? I just want to use google-translate.el.
I'm using Emacs 25.2 (9.0).