Dúvida arquivo de log

[ronaldobim]

Recentemente ativei a geração de logs na aplicação intraweb, queria saber que tipo de erro é este que estou vendo nos meus arquivos de log.

------------------------------------------------------------------------------------------------------------------------
Exception message  : Unknown browser type. User Agent string: 
Exception class    : EUnknownBrowserException
Exception address  : 00000000029F4A5A
Exception Time     : 2019-04-10 07:43:23.940
------------------------------------------------------------------------------------------------------------------------
(000000000047F25E){sigow.dll   } [00000000029F025E] Unknown function at TMethodImplementationIntercept + $3D57CE
(000000000052CE81){sigow.dll   } [0000000002A9DE81] Unknown function at TMethodImplementationIntercept + $4833F1
(000000000052BEBD){sigow.dll   } [0000000002A9CEBD] Unknown function at TMethodImplementationIntercept + $48242D
(00000000005131E4){sigow.dll   } [0000000002A841E4] Unknown function at TMethodImplementationIntercept + $469754
(00000000005137E1){sigow.dll   } [0000000002A847E1] Unknown function at TMethodImplementationIntercept + $469D51
(0000000000527817){sigow.dll   } [0000000002A98817] Unknown function at TMethodImplementationIntercept + $47DD87
(0000000000530062){sigow.dll   } [0000000002AA1062] Unknown function at TMethodImplementationIntercept + $4865D2
(000000000052FDE1){sigow.dll   } [0000000002AA0DE1] Unknown function at TMethodImplementationIntercept + $486351
(000000000053409A){sigow.dll   } [0000000002AA509A] HttpExtensionProc + $3A
(000000000000B540){isapi.dll   } [000007FEF328C540] Unknown function at RegisterModule + $1858
(0000000000013007){isapi.dll   } [000007FEF3294007] Unknown function at RegisterModule + $931F
(000000000000A421){isapi.dll   } [000007FEF328B421] Unknown function at RegisterModule + $739
(000000000000A964){isapi.dll   } [000007FEF328B964] Unknown function at RegisterModule + $C7C
(0000000000001DE7){iiscore.dll } [000007FEF5A82DE7]
(00000000000036A4){iiscore.dll } [000007FEF5A846A4]
(0000000000009775){iiscore.dll } [000007FEF5A8A775]
(0000000000004A03){iiscore.dll } [000007FEF5A85A03]
(000000000003162D){iiscore.dll } [000007FEF5AB262D] Unknown function at GetProtocolManager + $1A31D
(0000000000031A4F){iiscore.dll } [000007FEF5AB2A4F] Unknown function at GetProtocolManager + $1A73F
(0000000000002E3A){defdoc.dll  } [000007FEF5D33E3A] Unknown function at RegisterModule + $F62
(00000000000021D7){defdoc.dll  } [000007FEF5D331D7] Unknown function at RegisterModule + $2FF
(000000000000228C){defdoc.dll  } [000007FEF5D3328C] Unknown function at RegisterModule + $3B4
(0000000000001DE7){iiscore.dll } [000007FEF5A82DE7]
(00000000000036A4){iiscore.dll } [000007FEF5A846A4]
(0000000000009775){iiscore.dll } [000007FEF5A8A775]
(0000000000004A03){iiscore.dll } [000007FEF5A85A03]
(0000000000009B37){iiscore.dll } [000007FEF5A8AB37]
(00000000000000D2){w3dt.dll    } [000007FEF78A10D2] Unknown function at UlAtqGetContextProperty + $C2
(000000000000009C){w3dt.dll    } [000007FEF78A109C] Unknown function at UlAtqGetContextProperty + $8C
(0000000000000FBA){W3TP.dll    } [000007FEF97C1FBA]
(0000000000001024){W3TP.dll    } [000007FEF97C2024]
(00000000000010A1){W3TP.dll    } [000007FEF97C20A1]
(000000000001471D){kernel32.dll} [00000000779E571D] BaseThreadInitThunk + $D
(000000000005285D){ntdll.dll   } [0000000077C4385D] RtlUserThreadStart + $1D

------------------------------------------------------------------------------------------------------------------------