diff --git a/packages/server/src/trpc/TRPCContextCreator.ts b/packages/server/src/trpc/TRPCContextCreator.ts
index 67df8c2..3a104c2 100644
--- a/packages/server/src/trpc/TRPCContextCreator.ts
+++ b/packages/server/src/trpc/TRPCContextCreator.ts
@@ -56,22 +56,52 @@ const mapErrors = <A, E, R>(effect: Effect.Effect<A, E, R>) =>
     Effect.sandbox(effect).pipe(
         Effect.catchTags({
             Die: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
+
             Interrupt: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
+
             Fail: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
+
             Empty: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
+
             Parallel: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
+
             Sequential: cause => Effect.fail(
-                new TRPCError({ code: "INTERNAL_SERVER_ERROR", cause })
+                new TRPCError({
+                    code: "INTERNAL_SERVER_ERROR",
+                    cause: new TRCPErrorCause(cause),
+                })
             ),
         })
     )
+
+
+export class TRCPErrorCause extends Error {
+    constructor(readonly cause: unknown) {
+        super()
+    }
+}