Mermaid PDF Rendering

[kristi-balla]

Hey everybody, lately I tried to get this to pdf, but the extension complains about a mermaid error:

---
title: Bridge Pattern Hashing Example
---
classDiagram
namespace ApplicationDomain {
    class Hashing {
        <<Abstract>>
        + hashDocument(String doc) String
    }
    class PreviewHashing {
        + hashDocument(String doc) String
    }
    class EnterpriseHashing {
        + hashDocument(String doc) String
    }
}
namespace SolutionDomain {
    class HashFunction {
        <<Interface>>
        + calculateHashCode(String input) String
    }
    class SimpleHash {
        + calculateHashCode(String input) String
    }
    class CryptoSecHash {
        + calculateHashCode(String input) String
    }
}
    class ExamSystem {
        + readFile(String path) String
        + hashFile(String input, Hashing hash): String
    }
    Hashing --> HashFunction: implementation
    ExamSystem --> Hashing
    PreviewHashing --|> Hashing
    EnterpriseHashing --|> Hashing
    SimpleHash --|> HashFunction
    CryptoSecHash --|> HashFunction

I played a bit around with v11.x, v10.x and v9.x versions and all complain about syntax errors. As you can probably see on GitHub, there are none:

---
title: Bridge Pattern Hashing Example
---
classDiagram
namespace ApplicationDomain {
    class Hashing {
        <<Abstract>>
        + hashDocument(String doc) String
    }
    class PreviewHashing {
        + hashDocument(String doc) String
    }
    class EnterpriseHashing {
        + hashDocument(String doc) String
    }
}
namespace SolutionDomain {
    class HashFunction {
        <<Interface>>
        + calculateHashCode(String input) String
    }
    class SimpleHash {
        + calculateHashCode(String input) String
    }
    class CryptoSecHash {
        + calculateHashCode(String input) String
    }
}
    class ExamSystem {
        + readFile(String path) String
        + hashFile(String input, Hashing hash): String
    }
    Hashing --> HashFunction: implementation
    ExamSystem --> Hashing
    PreviewHashing --|> Hashing
    EnterpriseHashing --|> Hashing
    SimpleHash --|> HashFunction
    CryptoSecHash --|> HashFunction

Loading

After some trial and error, I managed to reduce the culprit to the namespace keyword and the annotations: <<Abstract>> and <<Interface>>. However, the code also works on the playground. I haven't used this in a while, so could someone help me come up with a solution?