I am new to the Web Interaction (Labs) extension and facing an issue getting started with accessing a web page.
The simple workflow (attached) consists only of a Web Interaction Start and a Navigator node. Upon initial build and even after restarting KNIME, this workflow executes successfully.
However, after restarting my computer and attempting to execute the workflow again, I receive the following error in the Navigator node:
Execute failed: No connection data found. Re-execute the upstream node to refresh the connection.
KNIME Version: 5.25
Troubleshooting Steps thus far:
Directed the Web Interaction Start node via filepath to my chrome.exe file
Re-executing after receiving the error message (as instructed by the message)
Changing the URL to which the Navigator is navigating (including using a full URL)
Deleting all nodes and rebuilding the workflow (works temporarily before the error persists after another PC restart).
Copying community-built workflows from the KNIME Hub and testing (the attached .knwf actually originated as one of these copies. Interestingly, the full workflow executed successfully after a PC restart, but when I deleted the other nodes and retried with only the Web Interaction Start and Navigator nodes, I began to face the same error).
There must be something simple I am overlooking. Thank you for your help!
Thanks for providing a sample workflow, I downloaded it and followed your steps to reproduce the bug you are encountering.
Steps:
Run the workflow (the 2 nodes)
After they both execute, save the workflow
Restart the computer
After doing the 3 steps above, I was able to reproduce the bug you mention running into. I was able to get it running once by resetting the nodes and closing KAP, but I have tried this method again and it seems to be stuck at the error message you mention.
I will be creating a ticket for this as you found a bug that is reproducible on my end also.
Once I get the ticket up I will respond and attach it in this thread.
Hey @rks879,
did you try reset the Web Interaction Starter Node as well and not only the Navigator? The starter opens up the browser to be used and after a restart of your PC, you’d need to start it again.
