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Web application show an error because of connection

Member 14760154 asked:

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I have a problem with my current project ,

It have a features of upload excel file ,
i was using epp plus to create it ,

now there was a problem after deploy my app,

i have test on my own pc ,and it was successfully ,

but when i deploy and another user use the features ,it show an error ,

After check the error, i think excel file not succesfully uploaded into temporary folder ,

What I have tried:

I am not sure about the cause ,but i think it can be cause by connection,

but how can i solve this,

is there another way,
can anyone please help me?
Tags: C#, ASP.NET

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