Tutorial [Q] Weather theme not included

so I stared developping my ROM for LG G2 and I got only one issue and didnt find how to figure out !
When I flash my ROM to test, the weather widget is there but I cannot put it in the screen or open the weather app unless I download the weather theme from LG update center !
How can I include it so after ROM flash I can directly put the widget without having to download extra data ?

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