Whats the rest of the error? Did you have a chance to look into the logs?
My educated guess would be that you are having this issue on VSS snapshot creation.
Please edit the plan and check these two options: Force using VSS and Use system VSS provider.
After that please try re-registering VSS core components following these instructions:
1) Create new text document at any place you want
2) Paste following code into it:

@echo off
net session >nul 2>&1
if %errorLevel% NEQ 0 (
echo Permissions are insufficient
echo Make sure to run this script with administrator privileges
set /p=Press ENTER to close
exit /b 1
)
REM echo on
REM enable string above for debugging only
cd /d %windir%\system32
net stop vss
net stop swprv
regsvr32 /s ole32.dll
regsvr32 /s oleaut32.dll
regsvr32 /s vss_ps.dll
vssvc /register
regsvr32 /s /i swprv.dll
regsvr32 /s /i eventcls.dll
regsvr32 /s es.dll
regsvr32 /s stdprov.dll
regsvr32 /s vssui.dll
regsvr32 /s msxml.dll
regsvr32 /s msxml3.dll
regsvr32 /s msxml4.dll
vssvc /register
net start swprv
net start vss

3) Please change the file extension from .txt to .bat
4) Execute this bat file and run the backup plan again.

You are doing a Group Report.

Please recheck what I suggested: I directed you to Remote Management, it is this page: https://mspbackups.com/Admin/Computers.aspx
And there to Group Actions.

Like this:


Let us know how it will go for you.

In MBS on the Remote Management under Group Actions you have a Plan Settings Report option. It will give you a csv detailing you all the plans for the machines you have in the current search on the Remote Management. So it can even be a single machine, or some Company you have or just remove all filters and have it generated for all your machines.
It will have this info:
Company,User,Login,Computer,Profile,Plan Name,Storage,Source,Excluded files,Encryption,Compression,Advanced Settings,Retention Policy,Notification,Schedule,Full Backup Schedule.

Compared to what you provided in the example, I suppose the only thing that is missing is the Ransomware protection filed, which I will suggest to add.