Merge pull request #10150 from fusuiyi123/ISSUE-8474

Improve No valid constructors error message to suggest a list of valid constructors
playframework · Mar 30, 2020 · 76ad96d · 76ad96d
2 parents ffc8ac6 + 169b73e
commit 76ad96d
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/core/play/src/main/scala/play/api/inject/Module.scala b/core/play/src/main/scala/play/api/inject/Module.scala
@@ -170,7 +170,14 @@ object Modules {
           tryConstruct()
         }
         .getOrElse {
-          throw new PlayException("No valid constructors", "Module [" + className + "] cannot be instantiated.")
+          throw new PlayException(
+            "No valid constructors",
+            "Module [" + className + "] cannot be instantiated. " +
+              "Expected one of:\n" +
+              "()\n" +
+              "(play.api.Environment, play.api.Configuration)\n" +
+              "(play.Environment, com.typesafe.config.Config)"
+          )
         }
     } catch {
       case e: PlayException       => throw e