[db] Print the type and id of the not found provider
diff --git a/src/db.c b/src/db.c
index b538d5d..6979794 100644
--- a/src/db.c
+++ b/src/db.c
@@ -238,7 +238,8 @@
 		return NULL;
 	}
 	if (!dbi_result_next_row(result)) {
-		printf("DB: Failed to find the Subscriber.\n");
+		printf("DB: Failed to find the Subscriber. '%u' '%s'\n",
+			field, id);
 		dbi_result_free(result);
 		return NULL;
 	}