Can't back up my whatsapp chat history?

[hyejinx]

My phone has the android version 4.4.4 and to backup my Whatsapp history I have to back it up on my Google Drive account.
The thing is, my sd card I have at the moment is corrupted and as we speak I am transferring old files to a new sd card.
But I can't back up my Whatsapp chat history anymore. The last back up is from July 4th.
How can I still back up my chat history?

 

[B. Diddy]

Moved to the WhatsApp forum.