My game doesn't work. I get the report:

The game crashed whilst initializing game
Error: java.lang.OutOfMemoryError: Java heap space

Description:
---- Minecraft Crash Report ----
// Hey, that tickles! Hehehe!

Time: 10.11.19 22:29
Description: Initializing game

java.lang.OutOfMemoryError: Java heap space
at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569)
at java.lang.StringBuffer.append(StringBuffer.java:369)
at java.io.BufferedReader.readLine(BufferedReader.java:370)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1294)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1248)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1229)
at cyg.a(SourceFile:238)
at cyg.<init>(SourceFile:211)
at cyc.au(SourceFile:440)
at cyc.b(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:155)

A detailed walkthrough of the error, its code path and all known details is as follows:
---------------------------------------------------------------------------------------

– Head –
Thread: Client thread
Stacktrace:
at java.util.Arrays.copyOf(Arrays.java:3332)
at java.lang.AbstractStringBuilder.expandCapacity(AbstractStringBuilder.java:137)
at java.lang.AbstractStringBuilder.ensureCapacityInternal(AbstractStringBuilder.java:121)
at java.lang.AbstractStringBuilder.append(AbstractStringBuilder.java:569)
at java.lang.StringBuffer.append(StringBuffer.java:369)
at java.io.BufferedReader.readLine(BufferedReader.java:370)
at java.io.BufferedReader.readLine(BufferedReader.java:389)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1294)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1248)
at org.apache.commons.io.IOUtils.readLines(IOUtils.java:1229)
at cyg.a(SourceFile:238)
at cyg.<init>(SourceFile:211)
at cyc.au(SourceFile:440)

– Initialization –
Details:
Stacktrace:
at cyc.b(SourceFile:394)
at net.minecraft.client.main.Main.main(SourceFile:155)

– System Details –
Details:
Minecraft Version: 1.14.4
Minecraft Version ID: 1.14.4
Operating System: Windows 7 (amd64) version 6.1
Java Version: 1.8.0_51, Oracle Corporation
Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
Memory: 1301266784 bytes (1240 MB) / 2113929216 bytes (2016 MB) up to 2147483648 bytes (2048 MB)
CPUs: 4
JVM Flags: 9 total; -XX:HeapDumpPath=MojangTricksIntelDriversForPerformance_javaw.exe_minecraft.exe.heapdump -Xss1M -Xmx2G -XX:+UnlockExperimentalVMOptions -XX:+UseG1GC -XX:G1NewSizePercent=20 -XX:G1ReservePercent=20 -XX:MaxGCPauseMillis=50 -XX:G1HeapRegionSize=32M
Launched Version: 1.14.4
LWJGL: 3.2.2 build 10
OpenGL: NO CONTEXT
GL Caps:
Using VBOs: Yes
Is Modded: Probably not. Jar signature remains and client brand is untouched.
Type: Client (map_client.txt)
Resource Packs: ~_ERROR~ NullPointerException: null
Current Language: ~_ERROR~ NullPointerException: null
CPU: <unknown>