server error 500 in ajax requests after updating to 1.4

I updated to mautic 1.4 and all went well. I logged out and logged in. But now, following menu links do not show the intended pages:



Components - assets

Components - forms





From console, I see that the ajax request to fetch these is returning error code 500:

  1. http://m.thepsychometricworld.com/mautic/s/forms?_=1463341918860&mauticUserLastActive=1&mauticLastNotificationId=333 (returns 500)
  2. https://m.thepsychometricworld.com/mautic/s/assets?_=1463341918861&mauticUserLastActive=1&mauticLastNotificationId=333 (returns 500)



    whereas Components - landing pages is working as expected



    Everything else is working.



    What should I do to fix this?


I updated to mautic 1.4 and all went well. I logged out and logged in. But now, following menu links do not show the intended pages:

Components - assets
Components - forms

From console, I see that the ajax request to fetch these is returning error code 500:

  1. http://m.thepsychometricworld.com/mautic/s/forms?_=1463341918860&mauticUserLastActive=1&mauticLastNotificationId=333 (returns 500)
  2. https://m.thepsychometricworld.com/mautic/s/assets?_=1463341918861&mauticUserLastActive=1&mauticLastNotificationId=333 (returns 500)

whereas Components - landing pages is working as expected

Everything else is working.

What should I do to fix this?