Prepopulation redirect to second form is not working

So I made this two forms.. Form A:https://form.jotform.com/60967399364978  prepopulates form B: https://form.jotform.com/60967271989980 and when testing it when clicking "envíar" on form A it doesn't takes me to the prepopulated form B. It takes me to this link: https://submit.jotformpro.com/submit/60967399364978/ ... its stays all WHITE SCREEN. Wondering whats happening? Sometimes it does work and sometimes this happends... might be a field error? 

Can you please indicate if you are still having issue with your second form. I have just submitted a test in your first form and noticed that it redirected me to your second form with the fields populated.

If you are still having problems, please let us now. We will be glad to take another look.

Yes still being redirected to this link: https://submit.jotformpro.com/submit/60967399364978/ (white page).

Ok.. So I've noticed the the problem is the input I am putting the in "descripcion" text field. the input I put was: 

Investigación de 4 cuartillas interlineado 1.5 sobre: "la reforma educativa del 5 de abril del 2015 de la SEP" y tiene que tener ley jurisprudencia y doctrina.

El cliente comenta: "Tengo que hablar sobre los cambio que hubo desde que salio la reforma, su implementacion por parte de las distintas unidades administrativas y la funcionalidad que representa la implementacion de esta nueva politica publica"

If you submit the form with this it will make the error but if you submit something shorter or somehting like "cdgdfgsdfg" and submit it will work.. Whats wrong?

If you would like to pass values with spaces and other special characters, please use an 'urlencode' option. Please see the next guide.

Pass Value to Another Form with URL Encoding

Example:

https://form.jotform.com/60967271989980?nombre={nombre}

updated to

https://form.jotform.com/60967271989980?nombre={URLENCODE:nombre}

Please give it a try and let us know if you need any further assistance.