I experienced the same kinds of problem (related to some missing/wrong connection) when load monitoring apps.
My solution is that I duplicated the apps, then did try&fail on load data scripts many times until it worked.
For each missing/wrong connections, I can fix them in https://domainName/qmc/dataconnections
I googled the correct paths of connections respectively with the Qlik sense version.
You should also check release & deployment documents of qliksense version to check if they make any related changes.
Hope it helps! I think Qlik team should do somethings with this issue. At least, above solution works for me.
Thank you for all advice, I've found solution for this case.
You're right Bill, default for ServerLogFolder is in C:\ProgramData\Qlik\Sense\Log\ folder.
I just create new connection into that folder (may the folder will not appear because hidden), and rename in QMC Data Connection name to ServerLogFolder and re-run the task for License Monitoring & Operations Monitor.
Thank you All.