As samson said you are missing a comma after position
But it also likes like you are using a text editor that converts single quotes to smart quotes.
There is a difference between “clock”
and "clock"
.
Use either the Nano text editor if you are working directly on the Pi, if you are working from another pc/mac change your text editor to one that doesn’t convert quotes to smart quotes (like atom, notepad+, sublime or similar)
And, when the value of an variable is a number or true/false you don’t use any quotes at all.
So
{
module: "clock",
position: "top_left",
config: {
timeFormat:12, ------------ Pure number, no quotes
showPeriod:false, ------------ true or false, no quotes
displayType:"both",
analogSize:"400px"
}
},