Apikey: not found

can not find the api key while upload file

google site 

You are receiving API key not found error message, because you are using JotForm API key. You need to use your Filepicker API key.

https://www.jotform.com/blog/61-Filepicker-io-JotForm-Let-Your-Users-Upload-Files-From-the-Cloud

If you do not have Filepicker account you can use our File Upload field. Inside of this guide you can find how to create File Upload form: 

https://www.jotform.com/help/332-How-to-Create-File-Upload-Forms 

Hope this will help. Let us know if you need further assistance.