Error codes · Declarations and their clauses

PW0342

not_found_names_a_case

The program must hold to this: a page's not_found_on names a case of an error a query it reads can answer.

The decisions behind it

0163

Reading the diagnostic

pw check prints the code in brackets, [PW0342], with the sentence above and the place in your program. Errors and diagnostics explains how to read one, and every code is listed with its rule.