after effects 2021 error crash in progress

[zain26632291jkqk]

how can I fix it ?
please 

>>

[Mylenium]

Start by deleting the preferences and also reinstall AE with sufficient user privileges.

Mylenium 

[nishu_kush]

Hi zain26632291jkqk,

Welcome to the community and sorry for the crash.

As Mylenium suggested, here's how you can reset the preferences: https://community.adobe.com/t5/after-effects-discussions/faq-how-to-reset-trash-preferences-in-after...

Is there a specific reason why you're using the 2021 version? If possible, try using the latest version.

The new version would be a separate install. If you remove the 2021 version, it won't be available to download.

Let us know.

Thanks,

Nishu