This version of PlantUML is 219 days old, so you should consider upgrading

[tiantianaixuexi]

error:
PlantUML 1.2021.12
This version of PlantUML is 219 days old, so you should
consider upgrading from https://plantuml.com/download
[From string (line 2) ]
@startuml
@stratuml
Syntax Error?

hello, i setting version to
"plantuml.jar": "D:\plantuml-1.2022.5.jar",

I have set up the new version of jar, but he still prompts this error

[osmanizbat]

Hi @tiantianaixuexi,

I also got a similar error. I guess you are previewing with Markdown Preview Enhanced and that extension also includes an old plantuml.jar. If you preview the diagram with Alt + D it might render correctly.
I solved the issue by overriding the old jar in Markdown Preview Enhanced extension with new one.