Unisphere Central 4.0 "The Unisphere Central server is unreachable"

I have Unisphere Central 4.0 SP10 (4.0.10.1673904) 31 May 2022 deployed and frequently get alerts from the Unity arrays it is monitoring that it is unreachable.  This despite the fact that Unisphere Central (UC) is online and available.  All network settings on the appliance are correct, there are no network or IP related issues for the VM or the Unity arrays; the ESX host and network ports have no errors.  I've added the arrays to UC via the arrays using the IP with Additional security with the hash and challenge phrase.  Everything seems fine with all the array data and availability of UC.  However These alerts come from the arrays (even though they were quiet for a week).  I do see errors sometimes when logged into UC (see figures), so it seems related.  Clicking Reload does bring the web console right back and everything looks normal.

Running svc_diag returns this...

======== Now executing basic state ========
* System Friendly Host Name is: C4LX_base_pltfm_template
* System Serial Number is: BLAHBALH082100134
* Current Software version: MozzoV4SP10FR-4.0.10.1673904-MOZZOESX-RETAIL
* Unisphere IP address(es): Unable to determine IP address
Use of uninitialized value $ENV{"C4_BUILD_TARGET"} in string eq at /EMC/C4Core/tools/start_csx_tool.pl line 195.
Error: Unable to create: /etc/C4/config/rw No such file or directory
Use of uninitialized value $ENV{"C4_BUILD_TARGET"} in string eq at /EMC/C4Core/tools/start_csx_tool.pl line 195.
Error: Unable to create: /etc/C4/config/rw No such file or directory
* SSH Status: SSH is enabled on this system.
* Boot Mode: Normal_Mode
Use of uninitialized value in concatenation (.) or string at /EMC/Platform/bin/svc_diag line 124, <FILE> line 5.
* Post Faults:  (code * Post Faults: Undefined)
Use of uninitialized value in concatenation (.) or string at /EMC/Platform/bin/svc_diag line 124, <FILE> line 5.
* Backend Faults:  (code * Backend Faults: Undefined)
Use of uninitialized value in concatenation (.) or string at /EMC/Platform/bin/svc_diag line 124, <FILE> line 5.
* Boot Control Faults:  (code * Boot Control Faults: Undefined)
Use of uninitialized value in concatenation (.) or string at /EMC/Platform/bin/svc_diag line 124, <FILE> line 5.
* Rescue Reason:  (code * Rescue Reason: Undefined)
* SP Service Hint Code: <None>