Dear Vendant,
the way fortran interprets Windows file names (in particular the "\" characters 
and "X:" prefix) may depend on the compiler and system libraries. If you have 
compiled QE using WSL, you definitely have to use Unix path names relatives to 
the WSL installation (no idea about the details, but I'm sure Microsoft and 
Google can help you), if you are using some kind of native binary, then it 
depends on the compiler. Maybe using "\\" or "/" in place of "\" would help.

A quick solution would be to put the pseudopotentials in the directory in which 
you are running the code an just set pseudo_dir to "."
kind regards
--
Lorenzo Paulatto - Paris
On Jul 28 2021, at 11:26 am, Vedant Sachin Bang 
<f20190...@goa.bits-pilani.ac.in> wrote:
> Hello Users
>
> I am attempting to use the PWscf to perform scf calculations. I am using 
> BURAI version 1.3 as a GUI for Quantum Espresso.
> However, pw.exe is unable to locate the pseudopotentials directory on the 
> system.
>
> The following error is printed:
> Could not open file 
> C:\Users\vedan\.burai\.pseudopot\Hf.pbe-spfn-kjpaw_psl.1.0.0.UPF - not a 
> valid URI
>
> This occurs even after having set the 'pseudo_dir' properly in the input file:
> pseudo_dir = "C:\Users\vedan\.burai\.pseudopot"
>
> The pseudopotentials were downloaded as a part of BURAI itself, and they seem 
> to be correct to me.
>
> I have gone through the mail archives for this mailing list, and read through 
> the following conversations but none helped:
> https://www.mail-archive.com/users@lists.quantum-espresso.org/msg38035.html 
> (https://link.getmailspring.com/link/c12d3357-fbd4-4902-8552-e955ba1f5...@getmailspring.com/0?redirect=https%3A%2F%2Fwww.mail-archive.com%2Fusers%40lists.quantum-espresso.org%2Fmsg38035.html&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D)
> https://www.mail-archive.com/users@lists.quantum-espresso.org/msg38526.html 
> (https://link.getmailspring.com/link/c12d3357-fbd4-4902-8552-e955ba1f5...@getmailspring.com/1?redirect=https%3A%2F%2Fwww.mail-archive.com%2Fusers%40lists.quantum-espresso.org%2Fmsg38526.html&recipient=dXNlcnNAbGlzdHMucXVhbnR1bS1lc3ByZXNzby5vcmc%3D)
>
> Version of QE installed: 6.4.1
> Operating System: Windows 10
>
>
> If someone has figured out the fix, or can help me out, I'd be very grateful!
>
> Thanks and Regards
> Vedant
> Undergraduate Student
>
> Birla Institute of Technology and Science Pilani, Goa
> India
>
>
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