This worked like a charm, thanks! The best solutions are the simple ones

I had I-doIT Pro configured to sync new users from LDAP every night. Out of the blue this stopped working, without any changes being made to the configuration or anything else (that I know of). Trying to start a sync manually gives a "malformed JSON" error:

[root@idoit-ict i-doit]# sudo -u apache ./controller -v -m ldap sync
Logging in..
Connected to tenant: ICT Operations (1, user: controller)
General error: Syntax error, malformed JSON

(I-doIT is running on a CentOS 6 server, with PHP5.6 and MariaDB10)

I could not find anything out of the ordinary in any config or log files, except in I-doIT itself under Administration>System settings>Tenantsettings>LDAP (see attached screenshot). Before I found this I had already tried updating I-doIT to 1.9.3, which did not help with the sync issue (although it did give us the improved search bar, which was a pleasant surprise).

Does anyone have an idea what happened, what's wrong, or how to fix it?