Add additional debug statement

raptorsmiface/libraptorsmiface.c

@@ -749,6 +749,7 @@ int raptor_sm_get_new_unique_display(int mindisplay, int maxdisplay) {
 	if (mysql_query_internal(conn, query)) {
 		// Server error
 		free(query);
+		dprint("[ERROR] MySQL connection FAILED [%s]\n\r", mysql_error(conn));
 		mysql_close(conn);
 		return -2;
 	}