Unknown error when clicking "Manage funding source"

[Versatile14]

I'm trying to review my preapproved payments but, when clicking "Manage funding source" it shows an error.

And also when I try to request money it also says "An unknown error occured" Is there anything I can do about this?
you may check the attached files for reference 

[Hana16]

You posted this on March and I'm having the same problem on September. I'm just wondering if this has been resolved already?

[angellyignacio]

Same issue still.

[ggabriel1418]

Same here.

[XJirachiX]

This is very frustrating!

[DanSanoria]

any fix to this thing?

[japetcarbs]

Still not fixed?