scrypt mining is hanging after a couple of mints

[0xIslamTaha]

Description scrypt mining is hanging after a couple of minutes. I used the native library and ltc-scrypt lib and it hangs with both of them.

Steps

python nightminer.py -a scrypt -o stratum+tcp://hub.miningpoolhub.com:20523 -u test.test -p x -d -P

Actual result It will start mining and after a couple of minutes, it will hang.

I tried hard to find the reason for this hanging but I can't maybe a hint or suggestion can help.