E049: Ambiguous Reference

import scala.collection.immutable.Seq
import scala.collection.mutable.Seq

val items = Seq(1, 2, 3)

-- [E049] Reference Error: example.scala:4:12 ----------------------------------
4 |val items = Seq(1, 2, 3)
  |            ^^^
  |  Reference to Seq is ambiguous.
  |  It is both imported by name by import scala.collection.immutable.Seq
  |  and imported by name subsequently by import scala.collection.mutable.Seq
  |-----------------------------------------------------------------------------
  | Explanation (enabled by `-explain`)
  |- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
  | The identifier Seq is ambiguous because two name bindings of equal precedence
  | were introduced in the same scope.
  |
  | The precedence of the different kinds of name bindings, from highest to lowest, is:
  |  - Definitions in an enclosing scope
  |  - Inherited definitions and top-level definitions in packages
  |  - Names introduced by import of a specific name
  |  - Names introduced by wildcard import
  |  - Definitions from packages in other files
  | Note:
  |  - As a rule, definitions take precedence over imports.
  |  - Definitions in an enclosing scope take precedence over inherited definitions,
  |    which can result in ambiguities in nested classes.
  |  - When importing, you can avoid naming conflicts by renaming:
  |    import scala.{Seq => SeqTick}
   -----------------------------------------------------------------------------

// Use a rename to avoid the conflict
import scala.collection.immutable.Seq
import scala.collection.mutable.{Seq as MutableSeq}

val items = Seq(1, 2, 3)
val mutableItems = MutableSeq(1, 2, 3)

import scala.collection.{immutable, mutable}
// Or use qualified names
val items = immutable.Seq(1, 2, 3)
val mutableItems = mutable.Seq(1, 2, 3)

// Or import only what you need
import scala.collection.immutable.Seq

val items = Seq(1, 2, 3)