Can't find packages in stackblitz, even though

问题:

I was installing dependencies for polymer app in stackblitz. It said 3 packages could not be found, but ther were present in npm website. I tried cdn also. Even that did not work.

Screenshots:

I have also installed CDN from this website in external sources of stackblitz.

Please help where am i going wrong. Thanks in advance.

回答1:

This stackoverflow answer helped me. Installing like: @polymer/iron-ajax@3.0.0-pre.21 worked for me.