Can no longer log into MineMeld WebUI with valid creds

[jgramke]

I've got 2 Minemeld servers, one for dev/test the other for production.  As of this morning, I can no longer log into the WebUI on either one of them.  Everything was working fine yesterday for both servers.   I can log into the OS just fine, but not either of the WebUI's.    The only ERRORs of any interest is in the minemeld-engine.log:

2018-12-17T16:18:37 (30322)base.read_checkpoint ERROR: o365-api-worldwide-sharepoint-miner - Error reading last checkpoint
2018-12-17T16:18:37 (30323)o365._load_side_config ERROR: o365-api-worldwide-common-miner - Error loading side config: [Errno 2] No such file or directory: '/opt/minemeld/local/config/o365-api-worldwide-common-miner_side_config.yml'
2

These are of interest because yesterday, through the webUI, I set up the named node, and others all similarly named on the production server, and a few days ago on the dev server, so maybe this has something to do with it. 

I'm only about 1 week old with minemeld and thought I was good as long as I stuck with the WebUI, but maybe not.

Any ideas of where to start?

I've attached some log files from

Thanks,

Jim