Breakpoint 1, -[NSException raise] (self=0x5555561ce160, 
    _cmd=0x7ffff7408300 <_OBJC_SELECTOR_TABLE+480>) at NSException.m:1501
1501	NSException.m: No such file or directory.
(gdb) bt
#0  -[NSException raise] (self=0x5555561ce160, 
    _cmd=0x7ffff7408300 <_OBJC_SELECTOR_TABLE+480>) at NSException.m:1501
#1  0x00007ffff70f5649 in +[NSException raise:format:arguments:] (self=<optimized out>, 
    _cmd=<optimized out>, name=0x7ffff7408cb0 <_OBJC_INSTANCE_5>, 
    format=0x7ffff74a7e50 <_OBJC_INSTANCE_0.14155>, argList=0x7fffffffba30)
    at NSException.m:1392
#2  0x00007ffff70f62a3 in +[NSException raise:format:] (
    self=self@entry=0x7ffff7408640 <_OBJC_Class_NSException>, 
    _cmd=_cmd@entry=0x7ffff74a7930 <_OBJC_SELECTOR_TABLE+48>, 
    name=0x7ffff7408cb0 <_OBJC_INSTANCE_5>, 
    format=format@entry=0x7ffff74a7e50 <_OBJC_INSTANCE_0.14155>) at NSException.m:1377
#3  0x00007ffff7221749 in gs_objc_msg_forward2 (receiver=0x5555570b1700, 
    sel=<optimized out>) at GSFFIInvocation.m:175
#4  0x00007ffff6ea0bdf in objc_msg_lookup () from /usr/lib/x86_64-linux-gnu/libobjc.so.4
#5  0x00007ffff24f9145 in -[UIxMailPartSignedViewer renderedPart] (self=0x5555570b1700, 
    _cmd=0x7ffff23bedf0 <_OBJC_SELECTOR_TABLE+1008>) at UIxMailPartSignedViewer.m:291
#6  0x00007ffff239be37 in -[UIxMailView defaultAction] (self=0x555556099800, 
    _cmd=0x555555a785f0) at UIxMailView.m:346
#7  0x00007ffff79fa8ef in -[WOComponent(DirectActionExtensions) performActionNamed:] (
    self=0x555556099800, _cmd=0x7ffff24d2250 <_OBJC_SELECTOR_TABLE+1872>, 
    _actionName=0x555555fcd010) at WOPageRequestHandler.m:245
#8  0x00007ffff24c6aa4 in -[UIxComponent performActionNamed:] (self=0x555556099800, 
    _cmd=0x7ffff7bbdc80 <_OBJC_SELECTOR_TABLE+928>, _actionName=0x55555598d750)
--Type <RET> for more, q to quit, c to continue without paging--c
    at UIxComponent.m:795
#9  0x00007ffff7a7b9e4 in -[SoActionInvocation callOnObject:withPositionalParametersWhenNotNil:inContext:] (self=0x555556006210, _cmd=0x7ffff7bbdcb0 <_OBJC_SELECTOR_TABLE+976>, _client=0x5555560424e0, _positionalArgs=0x0, _ctx=0x55555605f6a0) at SoActionInvocation.m:300
#10 0x00007ffff7a7bb10 in -[SoActionInvocation callOnObject:inContext:] (self=0x555556006210, _cmd=0x7ffff7bbdbd0 <_OBJC_SELECTOR_TABLE+752>, _client=0x5555560424e0, _ctx=0x55555605f6a0) at SoActionInvocation.m:318
#11 0x00007ffff7a7b758 in -[SoActionInvocation callOnObject:withPositionalParametersWhenNotNil:inContext:] (self=0x55555599e3a0, _cmd=0x7ffff7bbdcb0 <_OBJC_SELECTOR_TABLE+976>, _client=0x5555560424e0, _positionalArgs=0x0, _ctx=0x55555605f6a0) at SoActionInvocation.m:260
#12 0x00007ffff7a7bb10 in -[SoActionInvocation callOnObject:inContext:] (self=0x55555599e3a0, _cmd=0x7ffff7bba220 <_OBJC_SELECTOR_TABLE+672>, _client=0x5555560424e0, _ctx=0x55555605f6a0) at SoActionInvocation.m:318
#13 0x00007ffff7a76011 in -[SoObjectMethodDispatcher dispatchInContext:] (self=0x555555c5fb80, _cmd=0x7ffff7bbb900 <_OBJC_SELECTOR_TABLE+1536>, _ctx=0x55555605f6a0) at SoObjectMethodDispatcher.m:192
#14 0x00007ffff7a784d2 in -[SoObjectRequestHandler handleRequest:inContext:session:application:] (self=0x555555a68180, _cmd=0x7ffff7b3cad0 <_OBJC_SELECTOR_TABLE+848>, _rq=0x5555573156e0, _ctx=0x55555605f6a0, _sn=0x0, app=0x5555559da940) at SoObjectRequestHandler.m:584
#15 0x00007ffff79fc72c in -[WORequestHandler handleRequest:] (self=0x555555a68180, _cmd=0x7ffff7b051b0 <_OBJC_SELECTOR_TABLE+1616>, _request=0x5555573156e0) at WORequestHandler.m:240
#16 0x00007ffff79bcaa8 in -[WOCoreApplication dispatchRequest:usingHandler:] (self=0x5555559da940, _cmd=0x7ffff7b05200 <_OBJC_SELECTOR_TABLE+1696>, _request=0x5555573156e0, handler=0x555555a68180) at WOCoreApplication.m:712
#17 0x00007ffff79bcdc1 in -[WOCoreApplication dispatchRequest:] (self=0x5555559da940, _cmd=0x555555566520 <_OBJC_SELECTOR_TABLE+1664>, _request=0x5555573156e0) at WOCoreApplication.m:752
#18 0x000055555555d626 in -[SOGo dispatchRequest:] (self=0x5555559da940, _cmd=0x7ffff7ba2f80 <_OBJC_SELECTOR_TABLE+1760>, _request=0x5555573156e0) at SOGo.m:584
#19 0x00007ffff7a66a12 in -[WOHttpTransaction _run] (self=0x555556075b00, _cmd=0x7ffff7ba2fb0 <_OBJC_SELECTOR_TABLE+1808>) at WOHttpTransaction.m:566
#20 0x00007ffff7a66d88 in -[WOHttpTransaction run] (self=0x555556075b00, _cmd=0x7ffff7ba0cd0 <_OBJC_SELECTOR_TABLE+1168>) at WOHttpTransaction.m:619
#21 0x00007ffff7a62a2e in -[WOHttpAdaptor runConnection:] (self=0x555555738810, _cmd=0x7ffff7ba0d70 <_OBJC_SELECTOR_TABLE+1328>, _socket=0x555556206050) at WOHttpAdaptor.m:373
#22 0x00007ffff7a62c3e in -[WOHttpAdaptor _handleAcceptedConnection:] (self=0x555555738810, _cmd=0x7ffff7ba0d80 <_OBJC_SELECTOR_TABLE+1344>, _connection=0x555556206050) at WOHttpAdaptor.m:407
#23 0x00007ffff7a63044 in -[WOHttpAdaptor _handleConnection:] (self=0x555555738810, _cmd=0x7ffff7ba0e20 <_OBJC_SELECTOR_TABLE+1504>, connection=0x555556206050) at WOHttpAdaptor.m:466
#24 0x00007ffff7a634e3 in -[WOHttpAdaptor acceptConnection:] (self=0x555555738810, _cmd=0x7ffff7ba0c90 <_OBJC_SELECTOR_TABLE+1104>, _notification=0x5555560c2860) at WOHttpAdaptor.m:527
#25 0x00007ffff714c7e7 in -[NSNotificationCenter _postAndRelease:] (self=0x55555571efd0, _cmd=<optimized out>, notification=0x5555560c2860) at NSNotificationCenter.m:1198
#26 0x00007ffff7615d3e in -[NSObject(FileObjectWatcher) receivedEvent:type:extra:forMode:] (self=0x555555c02bd0, _cmd=0x7ffff74ce4b0 <_OBJC_SELECTOR_TABLE+304>, _fdData=0x6, _type=ET_RDESC, _extra=0x6, _mode=0x7ffff7455840 <_OBJC_INSTANCE_2>) at NSRunLoop+FileObjects.m:58
#27 0x00007ffff7260c79 in -[GSRunLoopCtxt pollUntil:within:] (self=<optimized out>, _cmd=0x7ffff7454a60 <_OBJC_SELECTOR_TABLE+1184>, milliseconds=<optimized out>, contexts=0x555555a885f0) at GSRunLoopCtxt.m:600
#28 0x00007ffff7192d5f in -[NSRunLoop acceptInputForMode:beforeDate:] (self=0x5555559c7a90, _cmd=0x7ffff7454a90 <_OBJC_SELECTOR_TABLE+1232>, mode=0x7ffff7455840 <_OBJC_INSTANCE_2>, limit_date=0x5555560254f0) at NSRunLoop.m:1224
#29 0x00007ffff7192af4 in -[NSRunLoop runMode:beforeDate:] (self=0x5555559c7a90, _cmd=<optimized out>, mode=0x7ffff7455840 <_OBJC_INSTANCE_2>, date=0x5555560254f0) at NSRunLoop.m:1304
#30 0x00007ffff79bc2e4 in -[WOCoreApplication run] (self=0x5555559da940, _cmd=0x555555566280 <_OBJC_SELECTOR_TABLE+992>) at WOCoreApplication.m:584
#31 0x000055555555c76d in -[SOGo run] (self=0x5555559da940, _cmd=0x7ffff7b27d90 <_OBJC_SELECTOR_TABLE+208>) at SOGo.m:337
#32 0x00007ffff79e6b79 in WOApplicationMain (_appClassName=0x5555555640c0 <_OBJC_INSTANCE_0.11131>, argc=13, argv=0x7fffffffec28) at WOApplicationMain.m:42
#33 0x00007ffff7a080c9 in WOWatchDogApplicationMain (appName=0x5555555640c0 <_OBJC_INSTANCE_0.11131>, argc=13, argv=0x7fffffffec28) at WOWatchDogApplicationMain.m:1049
#34 0x000055555555b30e in main (argc=13, argv=0x7fffffffec28, env=0x7fffffffec98) at sogod.m:51
(gdb) c
Continuing.
2019-03-15 18:39:04.080 sogod[27982:27982] EXCEPTION: <NSException: 0x5555561ce160> NAME:NSInvalidArgumentException REASON:-[UIxMailPartSignedViewer _processMessage]: unrecognized selector sent to instance 0x5555570b1700 INFO:(null)

Breakpoint 1, -[NSException raise] (self=0x5555561c1070, 
    _cmd=0x7ffff76d7a90 <_OBJC_SELECTOR_TABLE+560>) at NSException.m:1501
1501	in NSException.m