Modpacks won't launch

[metehani]

When i try to play a modpack it sends me back to the launcher screen immediately.

Here is the crash log:

#
# There is insufficient memory for the Java Runtime Environment to continue.
# Native memory allocation (mmap) failed to map 8589934592 bytes for Failed to commit pages from 0 of length 2097152
# Possible reasons:
#   The system is out of physical RAM or swap space
#   In 32 bit mode, the process size limit was hit
# Possible solutions:
#   Reduce memory load on the system
#   Increase physical memory or swap space
#   Check if swap backing store is full
#   Use 64 bit Java on a 64 bit OS
#   Decrease Java heap size (-Xmx/-Xms)
#   Decrease number of Java threads
#   Decrease Java thread stack sizes (-Xss)
#   Set larger code cache with -XX:ReservedCodeCacheSize=
# This output file may be truncated or incomplete.
#
#  Out of Memory Error (os_windows.cpp:3324), pid=8820, tid=12052
#
# JRE version:  (8.0_51-b16) (build )
# Java VM: Java HotSpot(TM) 64-Bit Server VM (25.51-b03 mixed mode windows-amd64 compressed oops)
# Failed to write core dump. Minidumps are not enabled by default on client versions of Windows
#

---------------  T H R E A D  ---------------

Current thread (0x0000000002a73800):  JavaThread "Unknown thread" [_thread_in_vm, id=12052, stack(0x00000000028b0000,0x00000000029b0000)]

Stack: [0x00000000028b0000,0x00000000029b0000]
Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native code)
V  [jvm.dll+0x32b4ca]
V  [jvm.dll+0x2797e3]
V  [jvm.dll+0x27a479]
V  [jvm.dll+0x271765]
V  [jvm.dll+0x296868]
V  [jvm.dll+0x21acb5]
V  [jvm.dll+0x3d73ff]
V  [jvm.dll+0x3d83e8]
V  [jvm.dll+0x3e0639]
V  [jvm.dll+0x3e0ff6]
V  [jvm.dll+0x3e1210]
V  [jvm.dll+0x3c133a]
V  [jvm.dll+0x3c76ae]
V  [jvm.dll+0xf1137]
V  [jvm.dll+0xf1a94]
V  [jvm.dll+0x20f037]
V  [jvm.dll+0x240d2a]
V  [jvm.dll+0x15b9a1]
C  [javaw.exe+0x217e]
C  [javaw.exe+0xcd37]
C  [javaw.exe+0xcdcb]
C  [KERNEL32.DLL+0x17034]
C  [ntdll.dll+0x52651]

---------------  P R O C E S S  ---------------

Java Threads: ( => current thread )

Other Threads:

=>0x0000000002a73800 (exited) JavaThread "Unknown thread" [_thread_in_vm, id=12052, stack(0x00000000028b0000,0x00000000029b0000)]

VM state:not at safepoint (not fully initialized)

VM Mutex/Monitor currently owned by a thread:  ([mutex/lock_event])
[0x0000000002a712e0] Heap_lock - owner thread: 0x0000000002a73800

GC Heap History (0 events):
No events

Deoptimization events (0 events):
No events

Internal exceptions (0 events):
No events

Events (0 events):
No events

Dynamic libraries:
0x00007ff7a6e10000 - 0x00007ff7a6e47000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\javaw.exe
0x00007ffbad5f0000 - 0x00007ffbad7e5000     C:\WINDOWS\SYSTEM32\ntdll.dll
0x00007ffbac840000 - 0x00007ffbac8fe000     C:\WINDOWS\System32\KERNEL32.DLL
0x00007ffbab340000 - 0x00007ffbab609000     C:\WINDOWS\System32\KERNELBASE.dll
0x00007ffbad150000 - 0x00007ffbad1fc000     C:\WINDOWS\System32\ADVAPI32.dll
0x00007ffbad0b0000 - 0x00007ffbad14e000     C:\WINDOWS\System32\msvcrt.dll
0x00007ffbac7a0000 - 0x00007ffbac83b000     C:\WINDOWS\System32\sechost.dll
0x00007ffbaba30000 - 0x00007ffbabb5a000     C:\WINDOWS\System32\RPCRT4.dll
0x00007ffbab7f0000 - 0x00007ffbab991000     C:\WINDOWS\System32\USER32.dll
0x00007ffbab230000 - 0x00007ffbab252000     C:\WINDOWS\System32\win32u.dll
0x00007ffbac130000 - 0x00007ffbac15b000     C:\WINDOWS\System32\GDI32.dll
0x00007ffbab0c0000 - 0x00007ffbab1cb000     C:\WINDOWS\System32\gdi32full.dll
0x00007ffbaaec0000 - 0x00007ffbaaf5d000     C:\WINDOWS\System32\msvcp_win.dll
0x00007ffbaadc0000 - 0x00007ffbaaec0000     C:\WINDOWS\System32\ucrtbase.dll
0x00007ffb95420000 - 0x00007ffb956ba000     C:\WINDOWS\WinSxS\amd64_microsoft.windows.common-controls_6595b64144ccf1df_6.0.19041.1110_none_60b5254171f9507e\COMCTL32.dll
0x00007ffbaba00000 - 0x00007ffbaba30000     C:\WINDOWS\System32\IMM32.DLL
0x00000000646f0000 - 0x00000000647c2000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\msvcr100.dll
0x0000000062e90000 - 0x0000000063713000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\server\jvm.dll
0x00007ffbad200000 - 0x00007ffbad208000     C:\WINDOWS\System32\PSAPI.DLL
0x00007ffb959e0000 - 0x00007ffb95a07000     C:\WINDOWS\SYSTEM32\WINMM.dll
0x00007ffba6340000 - 0x00007ffba6349000     C:\WINDOWS\SYSTEM32\WSOCK32.dll
0x00007ffba3c80000 - 0x00007ffba3c8a000     C:\WINDOWS\SYSTEM32\VERSION.dll
0x00007ffbac060000 - 0x00007ffbac0cb000     C:\WINDOWS\System32\WS2_32.dll
0x00000000646e0000 - 0x00000000646ef000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\verify.dll
0x00000000646b0000 - 0x00000000646d9000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\java.dll
0x0000000064690000 - 0x00000000646a6000     C:\Users\Erdal\AppData\Roaming\.technic\runtimes\jre-legacy\bin\zip.dll
0x00007ffba92a0000 - 0x00007ffba9484000     C:\WINDOWS\SYSTEM32\dbghelp.dll
0x00007ffbab2b0000 - 0x00007ffbab333000     C:\WINDOWS\System32\bcryptPrimitives.dll

VM Arguments:
jvm_args: -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewS

[JaariAtmc]

You cannot allocate 8 GB if you don't have it available.