<https://forums.minecraftforge.net/topic/102611-when-i-enter-the-game-with-forge-the-error-appears-without-forge-the-game-works-normally-my-game-version-is-117/#comment-462459>
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"It's not a Forge update that's needed... it's an Optifine update... \n\tAn open-source project and closed-source project are incompatible with each other, why do you assume its the open-source project's responsibility to fix that?\n \n"
<https://forums.minecraftforge.net/topic/102611-when-i-enter-the-game-with-forge-the-error-appears-without-forge-the-game-works-normally-my-game-version-is-117/?tab=comments#comment-460832>