diff --git a/backend/build.gradle.kts b/backend/build.gradle.kts
index e231fa8..f5f8041 100644
--- a/backend/build.gradle.kts
+++ b/backend/build.gradle.kts
@@ -1,5 +1,4 @@
 val exposed_version: String by project
-val h2_version: String by project
 val kotlin_version: String by project
 val logback_version: String by project
 
diff --git a/backend/src/main/kotlin/Application.kt b/backend/src/main/kotlin/Application.kt
index 32634a1..6c5fbd6 100644
--- a/backend/src/main/kotlin/Application.kt
+++ b/backend/src/main/kotlin/Application.kt
@@ -6,6 +6,7 @@ import io.ktor.server.engine.*
 import io.ktor.server.netty.*
 import dev.svitan.plugins.configureAdministration
 import dev.svitan.plugins.configureDatabases
+import dev.svitan.plugins.configureErrors
 import dev.svitan.plugins.configureHTTP
 import dev.svitan.plugins.configureMonitoring
 import dev.svitan.plugins.configureRouting
@@ -25,6 +26,7 @@ fun Application.module() {
     val dotenv = dotenv()
 
     configureHTTP()
+    configureErrors()
     configureRouting()
     configureMonitoring()
     configureSerialization()
diff --git a/backend/src/main/kotlin/services/Action.kt b/backend/src/main/kotlin/services/Action.kt
index f329cf7..07b2a83 100644
--- a/backend/src/main/kotlin/services/Action.kt
+++ b/backend/src/main/kotlin/services/Action.kt
@@ -15,8 +15,8 @@ enum class ActionKind {
     companion object {
         fun from(it: String): ActionKind {
             return when (it.lowercase()) {
-                "text" -> ActionKind.TEXT
-                "script" -> ActionKind.SCRIPT
+                "text" -> TEXT
+                "script" -> SCRIPT
                 else -> throw IllegalArgumentException("Invalid action kind: $it")
             }
         }