Linker error

[Jerry]

Hello, I am trying to compile a 1 year old project of mine which 
uses htmld and vibed. But I get this weird linker error which 
does not make any sense to me atleast. I am using Windows 7 and 
dub.

htmld 0.3.6: target for configuration "library" is up to date.
taggedalgebraic 0.10.12: target for configuration "library" is up 
to date.
eventcore 0.8.40: target for configuration "winapi" is up to date.
stdx-allocator 2.77.5: target for configuration "library" is up 
to date.
vibe-core 1.5.0: target for configuration "winapi" is up to date.
vibe-d:utils 0.8.4: target for configuration "library" is up to 
date.
vibe-d:data 0.8.4: target for configuration "library" is up to 
date.
mir-linux-kernel 1.0.1: target for configuration "library" is up 
to date.
vibe-d:crypto 0.8.4: target for configuration "library" is up to 
date.
diet-ng 1.5.0: target for configuration "library" is up to date.
vibe-d:stream 0.8.4: target for configuration "library" is up to 
date.
vibe-d:textfilter 0.8.4: target for configuration "library" is up 
to date.
vibe-d:inet 0.8.4: target for configuration "library" is up to 
date.
vibe-d:tls 0.8.4: target for configuration "openssl-mscoff" is up 
to date.
vibe-d:http 0.8.4: target for configuration "library" is up to 
date.
vibe-d:mail 0.8.4: target for configuration "library" is up to 
date.
vibe-d:mongodb 0.8.4: target for configuration "library" is up to 
date.
vibe-d:redis 0.8.4: target for configuration "library" is up to 
date.
vibe-d:web 0.8.4: target for configuration "library" is up to 
date.
vibe-d 0.8.4: target for configuration "vibe-core" is up to date.
my_stuff ~master: building configuration "updater-local"...
Linking...
vibe-d_web.lib(common.obj) : warning LNK4255: library contain 
multiple objects of the same name; lin
king object as if no debug info
eventcore.lib(driver.obj) : warning LNK4255: library contain 
multiple objects of the same name; link
ing object as if no debug info
eventcore.lib(driver.obj) : warning LNK4255: library contain 
multiple objects of the same name; link
ing object as if no debug info
eventcore.lib(core.obj) : warning LNK4255: library contain 
multiple objects of the same name; linkin
g object as if no debug info
my_stuff.obj : error LNK2019: unresolved external symbol 
_D60TypeInfo_xS4html3dom__T15ChildrenForwar
dTCQBfQBd4NodeVnnZQBi6__initZ referenced in function 
_D8typecons__T11ThrowOnNullTS4html3dom__T15Chil
drenForwardTCQBfQBd4NodeVnnZQBiZQCn9__xtoHashFNbNeKxSQDu__TQDoTQDeZQDwZm
.dub\build\updater-local-debug-windows-x86_64-dmd_2083-F0ADCB72FF986B7D6354817AF1E3A045\my_stuff.exe
  : fatal error LNK1120: 1 unresolved externals
Error: linker exited with status 1120
dmd failed with exit code 1.

I tried to find the typecons.ThrowOnNull thing in the standard 
library but that one does not exist. So I am pretty confused 
about what is going on here.

Thank you.