[Help] Openconnect working just fine on terminal but not on network-manager (Failed to find or parse web form in login page) Debian Buster

[Argel Ramírez Reyes]

Hi, dear developers:
I'm using openconnect 7.08-3, network-manager-openconnect 1.2.4-1 on
Debian Linux (Buster) installed from Debian repositories.
I connect succesfully to  Pulse VPN using the command line:

>>>>openconnect -v  https://vpn.library.ucdavis.edu --juniper

This command asks for user and password and connects allright.

When trying to use the graphical interface, however, I get an error:

GET https://vpn.library.ucdavis.edu/
Intentando conectar al servidor 169.237.240.10:443
Conectado a 169.237.240.10:443
Negociación SSL con «vpn.library.ucdavis.edu»
Conectó a HTTPS en vpn.library.ucdavis.edu
Se obtuvo la respuesta HTTP: HTTP/1.1 302 Found
Location: https://vpn.library.ucdavis.edu/dana-na/auth/url_3/welcome.cgi
Content-Type: text/html; charset=utf-8
Set-Cookie: DSSIGNIN=url_3; path=/dana-na/; expires=Thu, 31-Dec-2037
00:00:00 GMT; secure
Set-Cookie: DSIVS=; path=/; expires=Thu, 01 Jan 1970 22:00:00 GMT; secure
Set-Cookie: DSSignInURL=/; path=/; secure
Connection: close
Content-Length: 0
Cuerpo HTTP length:  (0)
GET https://vpn.library.ucdavis.edu/dana-na/auth/url_3/welcome.cgi
Negociación SSL con «vpn.library.ucdavis.edu»
Conectó a HTTPS en vpn.library.ucdavis.edu
Se obtuvo la respuesta HTTP: HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Date: Tue, 03 Apr 2018 04:36:06 GMT
Connection: close
Pragma: no-cache
Cache-Control: no-store
Expires: -1
Strict-Transport-Security: max-age=31536000
X-Frame-Options: SAMEORIGIN
Cuerpo HTTP http 1.0 (-1)
Socket SSL cerrado no limpiamente
Falló al encontrar o analizar el formulario web en la página de inicio de sesión

(error message translates as (sorry for the spanish): Failed to find
or parse web form in login page)
I have seen some similar errors on the web but somehow for the users
it disappears on its own.
Could anyone here help me make this work or at least understanding
what is going on?

Thanks!



-- 
Argel Ramírez R.