Fix throwing Error instead of Exception

Got JavaScript on the brain.

Author: code-asher

src/main/kotlin/com/coder/gateway/views/steps/CoderWizardStep.kt

@@ -69,7 +69,7 @@ sealed class CoderWizardStep<T>(
  */
 fun <A, Z> withoutNull(a: A?, block: (a: A) -> Z): Z {
     if (a == null) {
-        throw Error("Unexpected null value")
+        throw Exception("Unexpected null value")
     }
     return block(a)
 }
@@ -80,7 +80,7 @@ fun <A, Z> withoutNull(a: A?, block: (a: A) -> Z): Z {
  */
 fun <A, B, Z> withoutNull(a: A?, b: B?, block: (a: A, b: B) -> Z): Z {
     if (a == null || b == null) {
-        throw Error("Unexpected null value")
+        throw Exception("Unexpected null value")
     }
     return block(a, b)
 }
@@ -91,7 +91,7 @@ fun <A, B, Z> withoutNull(a: A?, b: B?, block: (a: A, b: B) -> Z): Z {
  */
 fun <A, B, C, D, Z> withoutNull(a: A?, b: B?, c: C?, d: D?, block: (a: A, b: B, c: C, d: D) -> Z): Z {
     if (a == null || b == null || c == null || d == null) {
-        throw Error("Unexpected null value")
+        throw Exception("Unexpected null value")
     }
     return block(a, b, c, d)
 }

src/main/kotlin/com/coder/gateway/views/steps/CoderWorkspacesStepView.kt

@@ -595,7 +595,7 @@ class CoderWorkspacesStepView : CoderWizardStep<CoderWorkspacesStepSelection>(
      */
     private fun triggerWorkspacePolling(fetchNow: Boolean) {
         if (poller != null && poller?.isCancelled != true) {
-            throw Error("Poller was not canceled before starting a new one")
+            throw Exception("Poller was not canceled before starting a new one")
         }
         poller = cs.launch {
             if (fetchNow) {