Syntax error in text mermaid version 10.3.0

[MrBjorn]

Describe the bug
I get Syntax error in text. Even the standard example from mermaid:

To Reproduce
sequenceDiagram
Alice->>+John: Hello John, how are you?
Alice->>+John: John, can you hear me?
John-->>-Alice: Hi Alice, I can hear you!
John-->>-Alice: I feel great!

Expected behavior
Syntax error in text
mermaid version 10.3.0

Screenshots
A diagram

Desktop (please complete the following information):

• OS: Windows 10
• VSCode version 1.87.2
• Extension version 0.19.1