That did it. Thanks.

I have two systems that have been running rock solid for at least 2 years. Today I attempted to review Sources and nothing showed up.

Still I can see current data and it seems to work OK.

Another missing feature is email and thread settings - but I could see them a week ago.

JVM memory looks OK too (for both systems).

The ma.logs look a little weird, however.
One is running 2.8.8

while the other is running 2.7.10

Suggestions?

That did it. Great solution. Thanks.

Here are the two errors in Console tab:

:

Sorry, I don't understand "Two errors in console..."

I've cleared browser cache and tried accessing it from other computers with no luck.

ma.log file looks good to me. My original goal was to bring up a specific web page for "guest" users. I created the web page called "main-furnace-heat-pump" and assigned it to "guest". I'm just not sure that this web page could be viewed by user "guest" at the time I set it up - before I tried a fresh login.

I cleared browser cache. The login is IPAddress:8080/ui/login. Again, no response after rebooting several times.

It's as though the default login page is not available - maybe caused by a link to a non-existent web page or one with inappropriate permissions.

Here's a look at the Chrome developer info.

Thoughts?

Can't Login after create a default page for "guest" user. All I get is the attempt to bring up the login screen.

The problem may be related to the fact that I was having a problem viewing the screen associated with main-furnace-heat-pump earlier. Getting permissions right has been difficult.

Looking in the database I see the following in jsonData.

Here I can see the link to main-furnace-heat-pump.

Should I fix this json data? Or should I just delete this record? Or are there other considerations?

I found the JVM memory to be too low and the graphics rendering gradually came to a halt. That's when this error occurred. I'm not using NoSQL, only H2. I'm running 3.4.4. I've increased JVM memory per a previous post. That may have been the problem. Plus I'm changing my rollups to reduce the number of data points in a query. Thanks for the help.

Mango shutsdown within 1 to 36 hours because of bug:

WARN  2018-07-16T07:02:28,751 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm

I've found this same bug mentioned for DoJo and a possible solution:

https://stackoverflow.com/questions/15357879/dojo-1-8-unable-to-update-combobox-every-time-there-ia-a-change-in-select

I'm trying for a fix by removing and re-implementing widgets on one page (for now) which appears to be at fault.

Any suggestions?

The full log follows:

pi@pi-9822-carney-main:/opt/mango/logs $ cat 07-16-2018-1.ma.log
INFO  2018-07-16T00:05:00,177 (com.serotonin.m2m2.rt.maint.work.BackupWorkItem.execute:101) - Starting backup WorkItem. 
INFO  2018-07-16T00:05:00,177 (com.serotonin.m2m2.rt.maint.work.DatabaseBackupWorkItem.execute:109) - Starting database backup WorkItem. 
INFO  2018-07-16T00:05:00,189 (com.serotonin.m2m2.rt.maint.work.DatabaseBackupWorkItem.createLogOutputStream:224) - Writing backup log to /opt/mango/logs/com.serotonin.m2m2.rt.maint.work.DatabaseBackupWorkItem.log 
INFO  2018-07-16T00:05:14,098 (com.serotonin.m2m2.rt.maint.work.BackupWorkItem.execute:181) - Finished backup WorkItem. 
INFO  2018-07-16T03:05:00,013 (com.serotonin.m2m2.rt.maint.DataPurge.executeImpl:68) - Data purge started 
INFO  2018-07-16T03:05:04,001 (com.serotonin.m2m2.rt.maint.DataPurge.executeImpl:91) - Data purge ended, 0 point samples deleted 
WARN  2018-07-16T07:00:51,288 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm 
WARN  2018-07-16T07:01:10,453 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm 
WARN  2018-07-16T07:01:38,932 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm 
WARN  2018-07-16T07:01:59,140 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm 
WARN  2018-07-16T07:02:28,751 (com.serotonin.m2m2.web.dwr.MiscDwr.jsError:176) - Javascript error
   Description: Error: Tried to register widget with id==chartRendererSelect but that id is already registered
   Page: http://10.144.1.204:8080/resources/dojo/dojo.js?v=1530110639 line 345 > Function line 3 > eval
   Line: 2
   Browser name: Firefox
   Browser version: 60
   osName: Mac
   location: http://10.144.1.204:8080/data_sources.shtm 
INFO  2018-07-16T07:12:42,142 (com.serotonin.m2m2.Lifecycle.terminate:387) - Mango Lifecycle terminating... 
INFO  2018-07-16T07:12:43,604 (com.serotonin.m2m2.rt.DataSourceGroupTerminator.terminate:72) - Terminating 1 LAST priority data sources in 8 threads. 
INFO  2018-07-16T07:12:43,612 (com.serotonin.m2m2.rt.RuntimeManagerImpl.stopDataSourceShutdown:451) - Data source 'SolarTempDifferential' stopped 
INFO  2018-07-16T07:12:43,708 (com.serotonin.m2m2.rt.DataSourceGroupTerminator.terminate:102) - Termination of 1 LAST priority data sources took 105ms 
INFO  2018-07-16T07:12:43,709 (com.serotonin.m2m2.rt.DataSourceGroupTerminator.terminate:72) - Terminating 3 NORMAL priority data sources in 8 threads. 
INFO  2018-07-16T07:12:43,718 (com.serotonin.m2m2.rt.RuntimeManagerImpl.stopDataSourceShutdown:451) - Data source 'Indianapolis Weather' stopped 
INFO  2018-07-16T07:12:43,754 (com.serotonin.m2m2.rt.RuntimeManagerImpl.stopDataSourceShutdown:451) - Data source 'BACnet' stopped 
INFO  2018-07-16T07:12:43,759 (com.serotonin.m2m2.rt.RuntimeManagerImpl.stopDataSourceShutdown:451) - Data source 'Mango Internal' stopped 
INFO  2018-07-16T07:12:43,812 (com.serotonin.m2m2.rt.DataSourceGroupTerminator.terminate:102) - Termination of 3 NORMAL priority data sources took 103ms 
INFO  2018-07-16T07:12:43,869 (com.serotonin.m2m2.rt.maint.BackgroundProcessingImpl.joinTermination:550) - All high priority tasks exited gracefully. 
INFO  2018-07-16T07:12:43,873 (com.serotonin.m2m2.rt.maint.BackgroundProcessingImpl.joinTermination:556) - All medium priority tasks exited gracefully. 
INFO  2018-07-16T07:12:43,876 (com.serotonin.m2m2.rt.maint.BackgroundProcessingImpl.joinTermination:561) - All low priority tasks exited gracefully. 
INFO  2018-07-16T07:12:45,963 (com.serotonin.m2m2.Lifecycle.terminate:496) - Mango Lifecycle terminated.

I've been running with H2 OK. But now would like to switch to MySQL.