NKPro fails for SSH login

Tried to SSH into remote site. Almost made it, but them NKPro crashed.

debug1: Next authentication method: publickey
debug1: Offering public key: cardno:00050000856F RSA SHA256:yijUqHcdejl0tlEpo1+VMxTebg4uoNxLVg+dSB1UYEI agent
debug1: Server accepts key: cardno:00050000856F RSA SHA256:yijUqHcdejl0tlEpo1+VMxTebg4uoNxLVg+dSB1UYEI agent
sign_and_send_pubkey: signing failed: agent refused operation
debug1: Offering public key: /Users/dap/.ssh/id_rsa RSA SHA256:yYlTmXLnQNc9VFsGqs9PTRw+8cNM7oDRUH8FdpqtQgg

Red LED remains lit on NKPro.
NitroKey App V1.4 is in a loop reporting “NitrokeyPro disconnected” over and over.
Then, by the time I get to typing the previous line, the red LED turns off and the App reports connected.

Retry login. This time, it prompts me for the PIN, and succeeds.

Turns out, I had enabled debug log prior to the crash. Nothing of interest there. Not sure if the times overlap the initial crash. Does the file get truncated on app restart?

[Fri Aug 9 13:30:30 2019][DEBUG_L2] macOS 10.14
[Fri Aug 9 13:31:31 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=4124690453
[Fri Aug 9 13:31:31 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=4124690453
[Fri Aug 9 13:31:31 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=4245914089
[Fri Aug 9 13:31:31 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=1582915438
[Fri Aug 9 13:31:32 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=2978294745
[Fri Aug 9 13:31:32 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=1681839497
[Fri Aug 9 13:31:32 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=682131385
[Fri Aug 9 13:31:32 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=3414701214
[Fri Aug 9 13:31:33 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=2266930862
[Fri Aug 9 13:31:33 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=1386569982
[Fri Aug 9 13:33:52 2019][WARNING] Accepting response with CRC other than expected Command ID: 0 GET_STATUS Reported by response and expected: 4017010655!=3110278205