Missing revert data in call exception error from BSC speedy node?

I often have this problem of not knowing exactly where the problem is occurring. In general, my program works fine, and only occasionally I get this exception. Is it the reason of your service node?

I don’t know now the reason for this error, it could be related to our nodes

Is it because I ask too many times or too often in a short period of time? I’m doing an array traversal request.