Erc20 Upgradable doesn't have a public burn function , but here it uses a public one which is absent -
https://github.com/Cyfrin/2024-09-stakelink/blob/main/contracts/core/lstRewardsSplitter/LSTRewardsSplitter.sol#L178C9-L180C14
It will always revert
Manual Review
Use some other mechanism to burn the token
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