More verbose error response in register endpoint

api/account.go

@@ -96,7 +96,7 @@ func HandleAccountRegister(w http.ResponseWriter, r *http.Request) {
 
 	err = db.AddAccountRecord(uuid, request.Username, argon2.IDKey([]byte(request.Password), salt, argonTime, argonMemory, argonThreads, argonKeyLength), salt)
 	if err != nil {
-		http.Error(w, "failed to add account record", http.StatusInternalServerError)
+		http.Error(w, fmt.Sprintf("failed to add account record: %s", err), http.StatusInternalServerError)
 		return
 	}