E2059 Syntax Errors

Syntax

empty when block; add at least one 'is' branch

When this occurs

This error is triggered when: empty when block; add at least one 'is' branch

Example error message

error[E2059]: empty when block; add at least one 'is' branch

How to fix

Review the error message and check your code at the indicated location. The message describes what went wrong — fix the underlying issue it identifies.

Related errors

No related errors.