Upgrade from 6.27 to 7

Thanks, @vjFaLk . That solves that particular issue.
Now when I finally upgrade, I get an error similar to the one in this post:

Except in my case, it’s:

File “/home/dev/frappe-bench/apps/frappe/frappe/modules/utils.py”, line 173, in load_doctype_module
raise ImportError, ‘Module import failed for {0} ({1})’.format(doctype, module_name)
ImportError: Module import failed for Payment Tool (erpnext.accounts.doctype.payment_tool.payment_tool)

Also, this might be because while using bench --upgrade, I’m going directly from my existing version (6.27.21) to the latest version (8.0.3).

Thoughts on how to get around this?