code: public static void outerError(String error) {
          TracyThreadContext ctx = threadContext.get();
          if (isValidContext(ctx)) {
              ctx.popAllWithError(error);
          }
      }
docs: In case where an exception is thrown Tracy.frameError(errorString) can be used to
  unwind all Tracy stack frames with a particular user error message.
  This is useful when one wants to signal an custom error for a task when one does not
  know (or does not care) how deep the the Tracy stack is.