Undefined index on contact's activity tab when there's an activity that has no With Contact
You can't see the error because ajax swallows it, but you can:
- Install the loudnotices extension.
- Create an activity and leave the With Contact blank.
- Visit the contact's activity tab. It will hang.
- Look in ConfigAndLog and you'll see the error/backtrace.
To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information