Sqlserver2005 creation maintenance plan task wizard failure solution

Database: Microsoft SQL Server 2005 Enterprise Edition
When you use the maintenance plan wizard for automatic database backup and click the "finish" button in the last step, an error message is displayed:

Failed to load type Microsoft. SqlServer. Smo. Smo from assembly "Microsoft. SqlServer. Smo, Version = 9.0.242.0, Culture = neutral, PublicKeyToken = 89845dcd80cc91" "Microsoft. SqlServer. Management. Smo. Agent. JobBaseCollection ".

I found a lot of posts in this area on the Internet, but I didn't give a clear answer.
In the end, I found an answer on Google, saying that SP2 needs to be installed. So I tried it. If it succeeds, the download link is provided below.

SP2 patch file name for SQL Server 2005 is: SQLServer2005SP2-KB921896-x86-CHS.exe

Sqlserver failed to create maintenance plan (SQL Server: 14234 error) automatic backup of database plan

1. Run the SQLServer2005 installation wizard.
2. After scanning, click next on the system configuration check page.
3. In the name box and company box, enter the appropriate information and click next.
4. Click to select the IntegrationServices check box, and then click next. (This is the most important thing. Others can be ignored ..)
5. Click next and then click install.
6. After the installation is complete, click next and then click finish.