Issue when creating custom instructions in Claude Style

[AWildFunny]

I follow this instruction to create custom instructions in Claude Style :

However, upload failed:

[KueipoH]

I guess you are a free user, so please use the prompt 'model_instructions/v3.5-20241113.md ~ v5.1-20241125.md for your style. It should work without errors. When I use version 5.1 extensive, I encounter the same error as you, but version 3.5 - 5.1 works without any issues