Topic on Project:Support desk

• Wikipedia:Main Page/Tomorrow (view source) (protected)
• Wikipedia:Main Page/styles.css (view source) (protected)
• Wikipedia:Selected anniversaries/September 16 (edit)
• Wikipedia:Selected anniversaries/September 17 (edit)
• Wikipedia:Today's featured article/September 16, 2021 (edit)
• Wikipedia:Today's featured article/September 17, 2021 (edit)
• Wikipedia:Today's featured list/September 17, 2021 (edit)
• Template:-? (view source) (template editor protected)
• Template:Abbr (view source) (template editor protected)
• Template:Born and died list (view source) (protected)
• Template:DYKbotdo (view source) (protected)
• Template:Did you know (view source) (protected)
• Template:Did you know/Queue/3 (view source) (protected)
• Template:Did you know/Queue/Next (view source) (protected)
• Template:Hlist (view source) (template editor protected)
• Template:If empty (view source) (template editor protected)
• Template:In the news (view source) (protected)
• Template:In the news/footer (view source) (protected)
• Template:Main Page banner (view source) (protected)
• Template:Main Page interwikis (view source) (protected)
• Template:Main page image (view source) (template editor protected)
• Template:Main page image/DYK (view source) (protected)
• Template:Main page image/ITN (view source) (protected)
• Template:Main page image/OTD (view source) (protected)
• Template:Main page image/TFA (view source) (protected)
• Template:Mbox (view source) (protected)
• Template:Nowrap (view source) (protected)
• Template:Other areas of Wikipedia (view source) (protected)
• Template:POTD/2021-09-15/1 (edit)
• Template:POTD/2021-09-15/4 (edit)
• Template:POTD protected/2021-09-16 (edit)
• Template:POTD protected/2021-09-17 (edit)
• Template:POTD texttitle (view source) (protected)
• Template:Remove file prefix (view source) (template editor protected)
• Template:SelAnnivAbbr (view source) (template editor protected)
• Template:SelAnnivFooter (view source) (protected)
• Template:Str endswith (view source) (template editor protected)
• Template:Str number/trim (view source) (template editor protected)
• Template:TFAFULL (view source) (protected)
• Template:TFAfooter (view source) (protected)
• Template:TFArecentlist (view source) (protected)
• Template:TFL full list (view source) (protected)
• Template:TFLcontent (view source) (protected)
• Template:TFLfooter (view source) (protected)
• Template:TFLrecentlist (view source) (protected)
• Template:Wikipedia's sister projects (view source) (protected)
• Template:Wikipedia's sister projects/styles.css (view source) (protected)
• Template:Wikipedia languages (view source) (protected)
• Template:Wikipedia languages/core (view source) (protected)
• Template:Wikipedia languages/styles.css (view source) (protected)
• Template:`s (view source) (template editor protected)
• Module:Arguments (view source) (protected)
• Module:If empty (view source) (template editor protected)
• Module:List (view source) (template editor protected)
• Module:Main page image (view source) (protected)
• Module:Message box (view source) (protected)
• Module:Message box/configuration (view source) (protected)
• Module:No globals (view source) (protected)
• Module:Random (view source) (template editor protected)
• Module:String (view source) (protected)
• Module:TableTools (view source) (protected)
• Module:Yesno (view source) (protected)

I think you could use wikipedia:Special:Export

I am trying to upload them on my wiki... and I got this Import failed: No interwiki prefix was supplied. what should I do or how do I upload them.

which one of them

Import to default locations

Import to a namespace:

and will I mark

Assign edits to local users where the named user exists locally

And the Interwiki prefix:

will it be Emypt

Probably stacks of that will be written specially for Wikipedia

You might be better just reading it for inspiration and writing your own stuff