Crash when adding to buddy list from User info tab

[BachoSeven]

Nicotine+ version: 3.1.0.dev1.r5093.b195f20d
Operating System/Distribution: Arch

Describe the bug

While on the User Info tab for an user, pressing the Add to Buddy List button crashes Nicotine(log attached below)

Additional context

Nicotine+ has encountered a critical error and needs to exit. Please copy the following error and include it in a bug report:

Type: <class 'AttributeError'>
Value: 'UserList' object has no attribute 'add_to_list'
Traceback:   File "/usr/lib/python3.9/site-packages/pynicotine/gtkgui/userinfo.py", line 398, in on_add_to_list
    self.frame.np.userlist.add_to_list(self.user)