No response on read/write request?

Question

Hi, I am testing example from sdk, 12.2.0, ble_app_uart, nrf52832 And i frequently get a strange behaviour where i don't get a response. And the connection is terminated after 30 sec.

I can't find a reason. What should i do to find the cause? Please look the log below:

2017-02-01 15:35:34.825815 < ACL data: handle 3585 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0001
2017-02-01 15:35:34.845298 > HCI Event: Number of Completed Packets (0x13) plen 5
    handle 3585 packets 1
2017-02-01 15:35:34.914876 > ACL data: handle 3585 flags 0x02 dlen 7
    ATT: Read resp (0x0b)
2017-02-01 15:35:35.034329 < ACL data: handle 3585 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0001
2017-02-01 15:35:35.055237 > HCI Event: Number of Completed Packets (0x13) plen 5
    handle 3585 packets 1
2017-02-01 15:35:35.124862 > ACL data: handle 3585 flags 0x02 dlen 7
    ATT: Read resp (0x0b)
2017-02-01 15:35:35.226230 < ACL data: handle 3585 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0001
2017-02-01 15:35:35.265217 > HCI Event: Number of Completed Packets (0x13) plen 5
    handle 3585 packets 1
2017-02-01 15:35:35.334958 > ACL data: handle 3585 flags 0x02 dlen 7
    ATT: Read resp (0x0b)
2017-02-01 15:35:35.426288 < ACL data: handle 3585 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0001
2017-02-01 15:35:35.476305 > HCI Event: Number of Completed Packets (0x13) plen 5
    handle 3585 packets 1
2017-02-01 15:35:35.544932 > ACL data: handle 3585 flags 0x02 dlen 7
    ATT: Read resp (0x0b)
2017-02-01 15:36:16.554297 < ACL data: handle 3585 flags 0x00 dlen 7
    ATT: Read req (0x0a)
      handle 0x0001
2017-02-01 15:36:48.678147 < HCI Command: Disconnect (0x01|0x0006) plen 3
    handle 3585 reason 0x13
    Reason: Remote User Terminated Connection
2017-02-01 15:36:48.679199 > HCI Event: Command Status (0x0f) plen 4
    Disconnect (0x01|0x0006) status 0x00 ncmd 1

No response on read/write request?

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