Invalid signature

this is view of Signature panel.

Acrobat/Reader DC hang while signing the file, it appears the error message:

Error during signature verification. Error encountered while BER decoding:

And after restart the Acrobat/Reader, the file is modifed(Although I did not input my password for my smart card with Certificate),

it seems very strange, click the signature, the document show

Error during signature verification. Error encountered while BER decoding:

Thank you!