Does not work with spaces or point in the user name

[fuzsin]

Many thank for this addon!

Bug report

Steps to reproduce

Working well for me with an easy user name or with user name with special character (like 'at' sign). But I get the error message: 'An error occurred while uploading xxx.pdf to mynextcloud' when the user name contains space or point.

Server configuration

PHP version: 5.6.31

Nextcloud version: 12.0.0

Desktop configuration

Thunderbird version: 52.2.1 (32 Bit)

Updated from an older installation or fresh install: fresh install