Exceptions

`EnvFileNotFoundException`

Thrown by penvload/penvloadAsync when the requested .env file does not exist.

class EnvFileNotFoundException implements Exception {
  final String path;
  final bool createFile;
}

Field	Meaning
`path`	The path that was looked up and could not be found.
`createFile`	Whether a placeholder file was created at `path` before this exception was thrown. `true`: a template file was written — fill it in and run again. `false`: no file was written — create `path` yourself first.

Depending on how penvload was called, a placeholder template file may have already been written to path before this exception was thrown — check createFile to see which case applies.

`MissingRequiredKeysException`

Thrown by penvload, penvloadOrNull, and penvloadAsync when one or more required keys are missing from the parsed environment, or are present with a blank (empty-string) value.

class MissingRequiredKeysException implements Exception {
  final List<String> keys;
}

keys lists every requested-but-missing (or blank) key after parsing — check all of them at once instead of failing on the first.