Error during miniflux setup

Step 1 for miniflux is to set up the app after installation. The setup button prompts the user to create a miniflux admin user account with name and password. Upon completing this and hitting submit I am presented with this error:

\>An error occurred while creating the user: End Of File (EOF). Exception style platform. <pexpect.pty_spawn.spawn object at 0x7fd353d58ad0> command: /usr/bin/miniflux args: ['/usr/bin/miniflux', '-c', '/etc/miniflux/miniflux.conf', '--create-admin'] buffer (last 100 chars): b'' before (last 100 chars): b'pq: password authentication failed for user "miniflux"\r\n' after: <class 'pexpect.exceptions.EOF'> match: None match_index: None exitstatus: 1 flag_eof: True pid: 22240 child_fd: 5 closed: False timeout: 30 delimiter: <class 'pexpect.exceptions.EOF'> logfile: None logfile_read: None logfile_send: None maxread: 2000 ignorecase: False searchwindowsize: None delaybeforesend: 0.05 delayafterclose: 0.1 delayafterterminate: 0.1 searcher: searcher_re: 0: re.compile(b'Enter Username: ').

There is no miniflux user visible in the FreedomBox users page after this, it appears the user creation fails.