I am trying to migrate a backup of our internal sharepoint site to sharepoint online using the sharepoint designer, I am getting the error message "Error occurred while importing the web <URL>. Could not find WebTemplate KB#75806 with LCID 1033.
The KB template is used on the on premise sharepoint install and this I assume could be the issue, but I am having troubles still. I have added the tempaltes Via "Site Settings -> Site Temploads -> Upload" but still no joy.
Can anyone who has resolved this issue in the past help?