by Brenda Mallinson.
I have been trying to backup partial areas of the 2.9 course, and then upload into 2.4.
Perhaps this is a more useful error? Although this came during the backedup file upload to 2.4 - did not get as far as the restore.
Invalid JSON string<pre>
Bad Request
Your browser sent a request that this server could not understand.Apache/2.2.15 (CentOS) Server at 41.93.37.2 Port 80</pre>