Cannot export wallet until the zcashd -exportdir option has been set

got this error, don’t know how to export now, before upgrade zcash version I backed up once successfully with the same command, but now get this problem, anyone can tell me how to do?
thanks

I think you will find an answer here:
https://forum.zcashcommunity.com/search?q=exportdir

thanks bro, that's what I need:grin:

oh, just for those who don’t know:

  1. zcashd -exportdir= --daemon
  2. zcash-cli z_exportwallet zcash_backup20190323

then you’ll find backup file in your