ProFTPD issues, can't even get debug mode to work

[lurch]

Hi,

We have started to get reports of customers having trouble uploading files, where get prompts to repeatedly overwrite the files, and they end up as 0 bytes, etc. They can upload files via the DA File Manager fine. We have been testing with an additional FTP in an account and get the same issue. It is not immediately obvious as a permissions issue, as gave files and folders 664 and 775 has a test and still get the same issue.

We wanted to run debugging mode to help identify the problem and get an error about the scoreboard file path not existing, which it does.

[root@ted ~]# proftpd -n -d 20
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: using TCP receive buffer size of 87380 bytes
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: using TCP send buffer size of 16384 bytes
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: using 'en_GB.UTF-8' locale based on LANG=en_GB.UTF-8 environment variable
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: using 'UTF-8' as local charset for UTF-8 conversion
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: mod_tls/2.9.2: using OpenSSL 1.1.1k FIPS 25 Mar 2021
2023-12-07 12:32:12,421 xxx.xxxxxx.xxx proftpd[2023930]: <IfModule>: using 'mod_tls.c' section at line 13
2023-12-07 12:32:12,423 xxx.xxxxxx.xxx proftpd[2023930]: ROOT PRIVS at mod_tls.c:14145
2023-12-07 12:32:12,424 xxx.xxxxxx.xxx proftpd[2023930]: RELINQUISH PRIVS at mod_tls.c:14148
2023-12-07 12:32:12,424 xxx.xxxxxx.xxx proftpd[2023930]: ROOT PRIVS at mod_tls.c:14176
2023-12-07 12:32:12,424 xxx.xxxxxx.xxx proftpd[2023930]: RELINQUISH PRIVS at mod_tls.c:14220
2023-12-07 12:32:12,424 xxx.xxxxxx.xxx proftpd[2023930]: <IfModule>: skipping 'mod_sftp.c' section at line 25
2023-12-07 12:32:12,424 xxx.xxxxxx.xxx proftpd[2023930]: fatal: ScoreboardFile: unable to use '/run/proftpd/proftpd.scoreboard': No such file or directory on line 52 of '/etc/proftpd.conf'

Anyone know why uploading could be so problematic or ideally how to get debug mode to actually work so can more accurately identify the cause.

We did even try switching back to PureFTP tho, we did switch away from that due to issues with FileZilla and those issues did immediately return. Even uninstalling and reinstall ProFTPD as an act of desperation hasn't worked.