SV08 unexpected message and Klipper will not restart -- No section: 'Variables'

First , looks like 2 people with SV06 had the same issue, but i did not see a resolution ?

After a successful ABS print I attempted to send a new ABS print to the SV08 using Orca and Mainsail as usual.
The Slicer was connected and was sending the Gcode to the printer when it issued an error that was nearly a full page.
I shut down and then power on the printer, the Panda screen came up with the above error.
When I reopened Mainsail i get this on the UI.

No section: ‘Variables’

Once the underlying issue is corrected, use the “RESTART”
command to reload the config and restart the host software.
Printer is halted

Tried restarting same error, researched and found advice to check all the bables , so I dropped off the bottom and made sure its was all seating OK. reconnected power, still same message.

Notice a pop up error that says
"
Moonraker reports: DISCONNECTED

Mainsail
Moonraker
Klipper
Moonraker can’t connect to Klipper!

Please check if the Klipper service is running and klippy_uds_address is correctly configured in the moonraker.conf.

klipper
v0.12.0-0 > v0.12.0-6
"

The following is the extract from the moonracker.log
"
2025-03-28 07:17:26,163 [application.py:log_request()] - 101 GET /websocket?token=Z7PQ75MEB6TDRLVVIZMSYS66H7N3BIFP (127.0.0.1) [TRUSTED_USER] 4.47ms
2025-03-28 07:17:26,164 [websockets.py:open()] - Websocket Opened: ID: 281472862615248, Proxied: False, User Agent: , Host Name: 127.0.0.1
2025-03-28 07:17:26,749 [file_manager.py:get_file_list()] - Updating File List …
2025-03-28 07:17:27,253 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 07:17:27,254 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 07:17:27,255 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 07:17:27,255 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 15:36:51,979 [authorization.py:_check_trusted_connection()] - Trusted Connection Detected, IP: 192.168.132.200
2025-03-28 15:36:51,984 [application.py:log_request()] - 101 GET /websocket (192.168.132.200) [TRUSTED_USER] 8.93ms
2025-03-28 15:36:51,985 [websockets.py:open()] - Websocket Opened: ID: 281472844922448, Proxied: True, User Agent: BBL-Slicer/v01.09.05.51 (light) Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36 Edg/107.0.1418.52, Host Name: 192.168.132.82
2025-03-28 15:36:51,989 [websockets.py:_handle_identify()] - Websocket 281472844922448 Client Identified - Name: mainsail, Version: 2.13.2, Type: web
2025-03-28 15:37:10,571 [klippy_connection.py:_on_connection_closed()] - Klippy Connection Removed
2025-03-28 15:37:11,841 [klippy_connection.py:_do_connect()] - Klippy Connection Established
2025-03-28 15:37:14,131 [klippy_connection.py:_request_initial_subscriptions()] - Webhooks Subscribed
2025-03-28 15:37:14,134 [klippy_connection.py:_request_initial_subscriptions()] - GCode Output Subscribed
2025-03-28 15:37:14,138 [klippy_connection.py:_check_ready()] -
No section: ‘Variables’

Once the underlying issue is corrected, use the “RESTART”
command to reload the config and restart the host software.
Printer is halted

2025-03-28 15:37:14,663 [file_manager.py:get_file_list()] - Updating File List …
2025-03-28 15:37:15,134 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 15:37:15,135 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 15:37:15,136 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
2025-03-28 15:37:15,137 [common.py:build_error()] - JSON-RPC Request Error - Requested Method: server.files.metadata, Code: -32601, Message: Metadata not available for
"

I am out off ideas as to what went wrong after a successful print ?

So thank you all for the replies Sovol CS, I was dumb founded with the amount off response.
I wonder if you all realize that if you want repeat customers , you really should put in some effort on at least a token reply…

PS
I did solve my issue, by getting rid of your customized Kliiper install and followed the the great work put in by Rapettor and Co at GitHub - Rappetor/Sovol-SV08-Mainline: Getting the Sovol SV08 onto mainline Klipper.