for me also i tried to retrieve my key as below

[kameeffbl72]

for me also i tried to retrieve my key as below
[Saturday 14/05/2022, 15:23:54] Folder "extracted/" already exists.
[Saturday 14/05/2022, 15:23:54] Taking out main files in "tmp/" folder temporarily.
[Saturday 14/05/2022, 15:23:54] Copied to "extracted/user": axolotl.db
[Saturday 14/05/2022, 15:23:54] "encrypted_backup.key" is not present in tarfile, if you have crypt15 backups then visit "YuvrajRaghuvanshiS/WhatsApp-Key-Database-Extractor#94" for more details.
[Saturday 14/05/2022, 15:23:54] "password_data.key" is not present in tarfile, if you have crypt15 backups then visit "YuvrajRaghuvanshiS/WhatsApp-Key-Database-Extractor#94" for more details.
[Saturday 14/05/2022, 15:23:54] Copied to "extracted/user": chatsettings.db
[Saturday 14/05/2022, 15:23:54] Copied to "extracted/user": key
[Saturday 14/05/2022, 15:23:54] Copied to "extracted/user": msgstore.db
[Saturday 14/05/2022, 15:23:54] Copied to "extracted/user": wa.db
[Saturday 14/05/2022, 15:23:54] Cleaning up "tmp/" folder...

and when trying to open msgstore.db i get a error message "It seems like you tried to open an older WhatsApp database. Please try to use an older version of WhatsApp Viewer.",

Originally posted by @Memadel in #150 (comment)

[vb0]

Is sqlite3 or even better sqlitebrowser opening the db fine?