I created a contact form with an 'email to recipient'-finisher but when the user sends the form, the message "Oops, an error occurred!" show up. However, when I use 'confirmation message' as a finisher no such error shows up. The 'page redirect'-finisher also returns an error.
Do you have any ideas how to fix this? (I'm also not getting anymore detailed error information even though I have the debug mode turned on in the configuration presets..)
I had not correctly configured the 'Mail handling settings' found under 'Configuration presets' in 'Settings'. I added custom settings to write the form replies to a local file, as the website was not live and I wanted to run tests.