Also happened to one of our customers twice in a few days, on v8.1.45.. Happened when updating changes in designer. Not sure exactly what was modified.
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Just happened to me on v8.1.48. I closed designer in the late evening when people opened perspective in the morning it showed "View not found" error. I quickly determined that all page configuration was cleared. I reviewed the audit log and was surprised to find the change was attributed to me as it would seem difficult to mistakenly delete each any every configured page.
I was able to manually restore the page configuration by extracting the gateway backup from the previous day (using 7zip) and examining the configuration contained in
\projects\<project_name>\com.inductiveautomation.perspective\page-config\config.json. I suppose there might be way to restore that file directly instead of the manual method used but I stuck with what I knew in the moment.
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Hi @tyler.bennett we had faced / facing this issue often in our projects, my simple way of avoiding this by when you did not found the views. Simply close the project and reopen again 99% it worked for us. Hope this may be helpful. And i believe in 8.3 IA will come up with solution for this issue.
@Anantharaman_Nagaraj I suspect we might be describing different problems. I have had rare occasion where my perspective views appeared to be missing in designer and a restart of designer (or restart of gateway, can't recall which) seemed to resolve that.
In this case it is the page configuration (URLS) that is missing (entirely) and I believe (can't recall for certain) that I looked at the underlying file system and confirmed the file was missing the expected configuration. I don't expect a designer/gateway restart will fix that.
oh ok @tyler.bennett thanks