[Help] Disconnected while receiving new quest

[NoIP]

Sometime I can't get new quest or can't complete finished quest. But after that (few hours later) it's gone and I do nothing. My log file look like:

[Wed Oct 27 2021 19:54:14.531067 3771726656]: [##ERROR##] 'OnCSCQuestOpnEvt' fail (Proc/Quest.cpp:963)
[Wed Oct 27 2021 19:54:14.531274 3771726656]: [##ERROR##] UsrMap Fail : MainCmd(282) Ret(3103C3:49:963) Addr(171.251.100.21) CharIdx(9)
[Wed Oct 27 2021 19:54:14.532258 3771726656]: close(): closing(171.251.100.21)
[Wed Oct 27 2021 19:54:14.532372 3771726656]: 1.close user -1 [CE037E8] (171.251.100.21)
[Wed Oct 27 2021 19:54:14.532772 3771726656]: PetInformationMap Count:0

[Wed Oct 27 2021 20:00:59.465320 3771726656]: [##ERROR##] 'OnCSCQuestOpnEvt' fail (Proc/Quest.cpp:963)
[Wed Oct 27 2021 20:00:59.465400 3771726656]: [##ERROR##] UsrMap Fail : MainCmd(282) Ret(3103C3:49:963) Addr(171.251.100.21) CharIdx(9)
[Wed Oct 27 2021 20:00:59.465505 3771726656]: close(): closing(171.251.100.21)
[Wed Oct 27 2021 20:00:59.465768 3771726656]: 1.close user -1 [CE037E8] (171.251.100.21)
[Wed Oct 27 2021 20:00:59.466108 3771726656]: PetInformationMap Count:0

[Wed Oct 27 2021 20:03:31.050590 3771726656]: [##ERROR##] 'OnCSCQuestOpnEvt' fail (Proc/Quest.cpp:882)
[Wed Oct 27 2021 20:03:31.050672 3771726656]: [##ERROR##] UsrMap Fail : MainCmd(282) Ret(310372:49:882) Addr(171.251.100.21) CharIdx(9)
[Wed Oct 27 2021 20:03:31.050744 3771726656]: close(): closing(171.251.100.21)
[Wed Oct 27 2021 20:03:31.053431 3771726656]: 1.close user -1 [CE037E8] (171.251.100.21)
[Wed Oct 27 2021 20:03:31.053573 3771726656]: PetInformationMap Count:0

[Wed Oct 27 2021 20:56:46.090684 3788512064]: [##ERROR##] 'OnCSCQuestOpnEvt' fail (Proc/Quest.cpp:912)
[Wed Oct 27 2021 20:56:46.090842 3788512064]: [##ERROR##] UsrMap Fail : MainCmd(282) Ret(310390:49:912) Addr(171.251.100.21) CharIdx(9)
[Wed Oct 27 2021 20:56:46.090957 3788512064]: close(): closing(171.251.100.21)
[Wed Oct 27 2021 20:56:46.091300 3788512064]: 1.close user -1 [CE037E8] (171.251.100.21)
[Wed Oct 27 2021 20:56:46.091945 3788512064]: PetInformationMap Count:0

[MentaL]