When I start the Direwolf20pack mod from the official Ftb launcher, i have this error:

[mattenzochi]

When I start the Direwolf20pack mod from the official Ftb launcher, i have this error:


Minecraft has crashed!
----------------------

Minecraft has stopped running because it encountered a problem; Failed to start game

A full error report has been saved to C:\Users\Dav Matt\AppData\Roaming\.minecraft\crash-reports\crash-2021-01-09_08.12.09-client.txt - Please include a copy of that file (Not this screen!) if you report this crash to anyone; without it, they will not be able to help fix the crash



--- BEGIN ERROR REPORT 51ea3e42 --------
Full report at:
C:\Users\Dav Matt\AppData\Roaming\.minecraft\crash-reports\crash-2021-01-09_08.12.09-client.txt
Please show that file to Mojang, NOT just this screen!

Generated 09/01/21 8.12

-- System Details --
Details:
Minecraft Version: 1.4.7
Operating System: Windows 10 (amd64) version 10.0
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 61430184 bytes (58 MB) / 134217728 bytes (128 MB) up to 2147483648 bytes (2048 MB)
JVM Flags: 8 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
AABB Pool Size: 0 (0 bytes; 0 MB) allocated, 0 (0 bytes; 0 MB) used
Suspicious classes: FML and Forge are installed
IntCache: cache: 0, tcache: 0, allocated: 0, tallocated: 0
FML: MCP v7.26a FML v4.7.35.556 Minecraft Forge 6.6.2.534 3 mods loaded, 3 mods active
mcp [Minecraft Coder Pack] (minecraft.jar) Unloaded->Constructed->Pre-initialized
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized
LWJGL: 2.9.0
OpenGL: AMD Radeon R9 200 Series GL version 4.6.14757 Compatibility Profile Context 20.12.1 27.20.14501.28009, ATI Technologies Inc.
Is Modded: Definitely; Client brand changed to 'forge,fml'
Type: Client (map_client.txt)
Texture Pack: Default
Profiler Position: N/A (disabled)
Vec3 Pool Size: ~~ERROR~~ NullPointerException: null

java.lang.NullPointerException
at java.io.Reader.<init>(Reader.java:78)
at java.io.InputStreamReader.<init>(InputStreamReader.java:97)
at bn.a(StringTranslate.java:77)
at bn.a(StringTranslate.java:117)
at net.minecraft.client.Minecraft.a(Minecraft.java:416)
at asq.a(SourceFile:56)
at net.minecraft.client.Minecraft.run(Minecraft.java:746)
at java.lang.Thread.run(Thread.java:745)
--- END ERROR REPORT 437720cb ----------