cubicweb #719285 ValidationError not displayed in custom forms [resolved]

ValidationError are not displayed any more in custom forms.

I have a custom form which submit a file. When the user validate the form, a function is run to deal with this file. This function raises ValidationError. Before 3.6, we saw the error message in the form, now we see nothing.

done in3.6.1
load left0.000
closed by<not specified>