errors

This section contains information about specific error messages shown by hyperpotamus.

MissingKeyError

This error occurs when you have an interpolation macro that uses a non-existent session key.

For example, the following script will cause a MissingKeyError to be raised:

- set:
    foo: bar
- print: <% baz %>

resulting in

MissingKeyError: No matching key was found in the session
 Key: baz
 Tag: <% baz %>

This error is usually caused by a scripting mistake, but in cases where a value may intentionally not exist in your a script, you can use the optional pipe after the field name to replace the macro with a blank or default value.

- print: Optional - <% foo | optional %>
- print: Optional w/default - <% foo | optional,bat %>

results in

Optional - 
Optional w/default - bat

MissingPipeError

This error occurs when you have an interpolation macro that uses pipe functions, but the pipe-function name is either misspelled in the script, or the corresponding custom pipe-function plugin has not been loaded.

- set:
    foo: bar
- print: <% foo | non_existant_pipe_function %>

results in:

PipeNotFoundError: Pipe function: 'non_existant_pipe_function' could not be found

Check the pipes reference to see if the pipe is listed.