Game crashes at the moment of start of game

 

20:50:54.332
Checking installations.
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Minecraft client 1.17.1 is ready to start.
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Starting!
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Using default game log configuration client-1.12.xml (outputs XML)
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Error: Could not find or load main class net.minecraft.client.main.Main Caused by: java.lang.ClassNotFoundException: net.minecraft.client.main.Main
20:50:55.698
Process crashed with exit code 1