E006: Missing Ident

val result = unknownIdentifier

-- [E006] Not Found Error: example.scala:1:13 ----------------------------------
1 |val result = unknownIdentifier
  |             ^^^^^^^^^^^^^^^^^
  |             Not found: unknownIdentifier
  |-----------------------------------------------------------------------------
  | Explanation (enabled by `-explain`)
  |- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  | Each identifier in Scala needs a matching declaration. There are two kinds of
  | identifiers: type identifiers and value identifiers. Value identifiers are introduced
  | by `val`, `def`, or `object` declarations. Type identifiers are introduced by `type`,
  | `class`, `enum`, or `trait` declarations.
  |
  | Identifiers refer to matching declarations in their environment, or they can be
  | imported from elsewhere.
  |
  | Possible reasons why no matching declaration was found:
  |  - The declaration or the use is misspelled.
  |  - An import is missing.
  |  - The declaration exists but refers to a type in a context where a term is expected, or vice-versa.
   -----------------------------------------------------------------------------

// Declare the identifier before using it
val unknownIdentifier = 42
val result = unknownIdentifier

// Or import it from another scope
import scala.math.Pi
val result = Pi

// Fix the spelling if it was a typo
val knownIdentifier = 42
val result = knownIdentifier