After Effects error: internal verification failure, sorry! {invalid index in indexed group}

Currently, I am engrossed in a project, and during the precomposing phase, I encountered an error message indicating the presence of special characters within my compositions. Although this type of issue has occurred before in After Effects, it typically disappears after clicking "OK" a few times. However, this time, despite using an auto clicker for an extended period, the error message persists without any resolution. Given that I haven't saved my project recently, I am hesitant to close After Effects. My primary concern is finding a way to resolve this error promptly to facilitate necessary fixes. Any assistance in resolving this matter would be greatly appreciated.

Version: 2020
Platform: PC