Numerous nightly warnings and failures

Each night around the same time I receive 5-6 warning emails from my server.  I am guessing that some of them are technically normal and are probably a part of the nightly maintenance tasks but want to check to make sure.  

Each night I see that mysql and cphulkd fail at the same time then I get the recovered email a few minutes later.  Just prior to these emails I get a Partial DNS resolver failure and The system detected an invalid hostname configuration.  On the partial DNS one only the IPv6 addresses are failing with lines like this in the email:

.  The IPv4 lines are fine.  We do not have any IPv6 addresses set up on this server.

In regard to the hostname configuration thing though I don't know what the deal is.  The hostname is set correctly, and I have even gone in and used the Hostname widget in WHM to reset it  yet I still get this error almost every night.

At the same time I receive the DNS error I also receive an update failure in upcp script email.  The output of which is below:

[2025-04-05 04:04:09 +0000] E [/usr/local/cpanel/scripts/check_valid_server_hostname] ERROR: WHM has detected a manual hostname change.
[2025-04-05 04:04:09 +0000] E [/usr/local/cpanel/scripts/check_valid_server_hostname]
[2025-04-05 04:04:09 +0000] E [/usr/local/cpanel/scripts/check_valid_server_hostname] The system will attempt to synchronize the current hostname “server.domain.com” to the system configuration. In the future, update your hostname in WHM’s (http://server.hostname.com:2087/scripts2/changehostname) interface (Home » Networking Setup » Change Hostname).
[2025-04-05 04:04:09 +0000] E [/usr/local/cpanel/scripts/check_valid_server_hostname] Use of uninitialized value $hostname in scalar chomp at /usr/local/cpanel/Whostmgr/Hostname.pm line 137.
...
[2025-04-05 04:05:09 +0000] Processing: Updating plugins data cache
[2025-04-05 04:05:09 +0000] - Processing command `/usr/local/cpanel/bin/refresh_plugin_cache`
[2025-04-05 04:05:09 +0000] - Finished command `/usr/local/cpanel/bin/refresh_plugin_cache` in 0.013 seconds
[2025-04-05 04:05:09 +0000] Processing: Ensuring SSL certificate information for CCS is up to date.
[2025-04-05 04:05:09 +0000] - Processing command `/usr/local/cpanel/scripts/ccs-check --run --ssl`
[2025-04-05 04:05:09 +0000] - Finished command `/usr/local/cpanel/scripts/ccs-check --run --ssl` in 0.004 seconds
[2025-04-05 04:05:09 +0000] Processing: Ensure cpanel-plugins yum repo exists
[2025-04-05 04:05:10 +0000] - Finished in 0.360 seconds
[2025-04-05 04:05:10 +0000] Processing: Checking Addon Licenses
[2025-04-05 04:05:10 +0000] - Finished in 0.001 seconds
[2025-04-05 04:05:10 +0000] Processing: Updating Public Suffix List
[2025-04-05 04:05:10 +0000] Processing: Checking End Of Life for current version.
[2025-04-05 04:05:10 +0000] - Finished in 0.194 seconds
[2025-04-05 04:05:10 +0000] Processing:
[2025-04-05 04:05:10 +0000] Maintenance complete.
=> Log closed Sat Apr 5 04:05:10 2025
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=> Log opened from cPanel Update (upcp) - Slave (1832195) at Sat Apr 5 04:05:10 2025