why the page can not fully display?

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hello dears,           why the page can not display fully, just display the return button ,the important information display “ no items found” , i don’t know why? in studio dispaly result:  
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1 answers
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The answer is already in your text: "no items found".
Your view has a list view, which is filled with the Entity "Calibration_file" from the database. 
In your case however, the database is empty and therefore no information can be displayed.

answered