Hello!
The workflow creator is assuming that in the appConfig.json file there is a part with 'defaults' and tries to count it... but it does not exist, so the PHP count command throws an error.
Solution:
Open the directory of the workflow (Right Click on the workflow in Alfred Settings, and click on "show in finder".
Open e4WorkflowApp.php in a text editor like notepad++ or atom...
Find line 51.. or at least the line with
if (count($e4Config['defaults']) > 0)
change it with
if (is_array($e4Config['defaults']) && count($e4Config['defaults']) > 0)
Save the file
Try the Workflow
Alternative: Open the file AppConfig.json and add this after the first curved bracket {
"defaults": [],