Error opening directory: Permission denied when selecting download location in Chromium and Firefox

I am trying to change my download location to a different internal hard drive. I get the following errors with both Chromium and Firefox:

My permissions are

drwx------  10 james james 4096 Oct 10 14:11 data

I also get the same error when trying to access my .Cryptomator directory, although I'm not sure if this is related.

I'm running Ubuntu 18.04. Thanks in advance.

EDIT: Output of mount | grep /media/james/data

/dev/sdc on /media/james/data type ext4 (rw,nosuid,nodev,relatime,data=ordered,uhelper=udisks2)

Solution 1:

I found an option under the permissions tab in Ubuntu Software that allows me to select "Read/write on removable storage devices" that seems to fix the problem.