Scala Spark Shared connection across all nodes - postgresql

Question

I want to write some data from spark DF to postgres. After searching on stack i found that easiest way of it - to open connection each time I use my prepared statement - and this works fine. But I want to share variable with connection across all nodes.
I get some code from here: https://www.nicolaferraro.me/2016/02/22/using-non-serializable-objects-in-apache-spark/ and wrote this:
class SharedVariable[T](constructor: => T) extends AnyRef with Serializable {
#transient private lazy val instance: T = constructor
def get = instance
}
object SharedVariable {
def apply[T](constructor: => T): SharedVariable[T] = new SharedVariable[T](constructor)}
val dsv = SharedVariable {
val ds = new BasicDataSource()
ds.setDriverClassName("org.postgresql.Driver")
ds.setUrl("jdbc:postgresql://...")
ds.setUsername("user")
ds.setPassword("pass")
ds}
But i get an error:
error: reference to SharedVariable is ambiguous;
it is imported twice in the same scope by
import $line1031857785174$read.SharedVariable
and import INSTANCE.SharedVariable val dsv = SharedVariable {
Can someone help me?