Same problem to me. I play yesterday and now the game just does not start.
Here is my console.txt file.
DEBUG: General , 1640562703416> LoggerManager.init > Initializing...
LOG : General , 1640562703492> cachedir set to "C:\Users\Otávio\Zomboid"
LOG : General , 1640562703501> 26-12-2021 20:51:43
LOG : General , 1640562703502> cachedir is "C:\Users\Otávio\Zomboid"
LOG : General , 1640562703502> LogFileDir is "C:\Users\Otávio\Zomboid\Logs"
LOG : General , 1640562703503> ===== System specs =====
LOG : General , 1640562703506> OS: Windows 10, version: 10.0, arch: amd64
LOG : General , 1640562703507> Processor: Intel64 Family 6 Model 42 Stepping 7, GenuineIntel
LOG : General , 1640562703508> Processor cores: 8
LOG : General , 1640562703509> Available processors (cores): 8
LOG : General , 1640562703513> Memory free: 1708.0 MB
LOG : General , 1640562703513> Memory max: 2048.0 MB
LOG : General , 1640562703514> Memory total available to JVM: 1800.0 MB
LOG : General , 1640562703520> C:\, Total: 446.1716 GB, Free: 162.11667 GB
LOG : General , 1640562704064> Mobo = [Product=POS-EIH61CE]
LOG : General , 1640562704500> CPU = [Manufacturer=GenuineIntel,MaxClockSpeed=3400,Name=Intel(R) Core(TM) i7-2600 CPU @ 3.40GHz]
LOG : General , 1640562704953> Graphics = [AdapterRAM=4293918720,DriverVersion=27.21.14.6089,Name=NVIDIA GeForce GTX 1050 Ti]
LOG : General , 1640562705377> VideoMode = [VideoModeDescription=1600 x 900 x 4294967296 cores]
LOG : General , 1640562705823> Sound = { [Manufacturer=Microsoft,Name=Dispositivo de High Definition Audio], [Manufacturer=NVIDIA,Name=NVIDIA High Definition Audio], [Manufacturer=NVIDIA,Name=NVIDIA Virtual Audio Device (Wave Extensible) (WDM)], [Manufacturer=(µudio USB gen‚rico),Name=Dispositivo de udio USB] }
LOG : General , 1640562706272> Memory RAM = { [Capacity=4294967296,Manufacturer=Undefined], [Capacity=4294967296,Manufacturer=Undefined] }
LOG : General , 1640562706273> ========================
LOG : General , 1640562706273> -- listing properties --
LOG : General , 1640562706274> java.specification.version=15
LOG : General , 1640562706274> sun.cpu.isalist=amd64
LOG : General , 1640562706274> sun.jnu.encoding=Cp1252
LOG : General , 1640562706275> java.class.path=.;istack-commons-runtime.jar;jassimp....
LOG : General , 1640562706275> java.vm.vendor=Azul Systems, Inc.
LOG : General , 1640562706276> sun.arch.data.model=64
LOG : General , 1640562706276> user.variant=
LOG : General , 1640562706276> java.vendor.url=http://www.azulsystems.com/
LOG : General , 1640562706277> user.timezone=America/Buenos_Aires
LOG : General , 1640562706277> zomboid.steam=1
LOG : General , 1640562706277> java.vm.specification.version=15
LOG : General , 1640562706278> os.name=Windows 10
LOG : General , 1640562706278> user.country=BR
LOG : General , 1640562706278> sun.boot.library.path=C:\Program Files (x86)\Steam\steamapp...
LOG : General , 1640562706279> zomboid.znetlog=1
LOG : General , 1640562706279> jdk.debug=release
LOG : General , 1640562706279> sun.cpu.endian=little
LOG : General , 1640562706280> user.home=C:\Users\Otávio
LOG : General , 1640562706280> user.language=pt
LOG : General , 1640562706281> java.specification.vendor=Oracle Corporation
LOG : General , 1640562706281> java.version.date=2020-10-20
LOG : General , 1640562706281> java.home=C:\Program Files (x86)\Steam\steamapp...
LOG : General , 1640562706282> file.separator=\
LOG : General , 1640562706282> line.separator=
LOG : General , 1640562706283> java.vm.specification.vendor=Oracle Corporation
LOG : General , 1640562706283> java.specification.name=Java Platform API Specification
LOG : General , 1640562706283> java.awt.headless=true
LOG : General , 1640562706284> user.script=
LOG : General , 1640562706284> sun.management.compiler=HotSpot 64-Bit Tiered Compilers
LOG : General , 1640562706284> java.runtime.version=15.0.1+9
LOG : General , 1640562706285> user.name=Otávio
LOG : General , 1640562706285> path.separator=;
LOG : General , 1640562706285> os.version=10.0
LOG : General , 1640562706286> java.runtime.name=OpenJDK Runtime Environment
LOG : General , 1640562706286> file.encoding=Cp1252
LOG : General , 1640562706286> java.vm.name=OpenJDK 64-Bit Server VM
LOG : General , 1640562706287> java.vendor.version=Zulu15.28+51-CA
LOG : General , 1640562706287> java.vendor.url.bug=http://www.azulsystems.com/support/
LOG : General , 1640562706287> java.io.tmpdir=C:\Users\OTVIO~1\AppData\Local\Temp\
LOG : General , 1640562706288> java.version=15.0.1
LOG : General , 1640562706288> user.dir=C:\Program Files (x86)\Steam\steamapp...
LOG : General , 1640562706288> os.arch=amd64
LOG : General , 1640562706289> java.vm.specification.name=Java Virtual Machine Specification
LOG : General , 1640562706289> sun.os.patch.level=
LOG : General , 1640562706289> java.library.path=win64/;.
LOG : General , 1640562706290> java.vm.info=mixed mode, sharing
LOG : General , 1640562706290> java.vendor=Azul Systems, Inc.
LOG : General , 1640562706290> java.vm.version=15.0.1+9
LOG : General , 1640562706290> sun.io.unicode.encoding=UnicodeLittle
LOG : General , 1640562706291> java.class.version=59.0
LOG : General , 1640562706291> -----
LOG : General , 1640562706292> versionNumber=41.65 demo=false
LOG : General , 1640562706292> svnRevision= date= time=
