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echo $this->tag->form("signup/register"); shows white screen

i have used echo $this->tag->form("signup/register"); but when i use this code phalcon shows white screen and i cannot see what is problem please help me

I got white screens a million times and know how annoying it can be. :-)

Did you implement the Debug component https://docs.phalcon.io/en/latest/reference/debug.html ? If not, than try it!