[LON-CAPA-admin] Can't see one of my student's problems

[Moore, Nathan T]

Appreciate the quick reply Stuart! I tried your suggestions below and using the switchserver url made the problem go away.  I assume this means there's an internal error in my server somewhere?  Any suggestions appreciated - my notes are posted below.

> Can't connect to loncapa.winona.edu:443 when using LWP is typically seen when the SSL/TLS certificate chain is incorrect, but whatsmychaincert.com suggests the chain is correct for your server.

CONCUR

>Is the Ubuntu package liblwp-protocol-https-perl installed?
 
YES
sudo apt install liblwp-protocol-https-perl
Reading package lists... Done
Building dependency tree
Reading state information... Done
liblwp-protocol-https-perl is already the newest version (6.07-2ubuntu2).
liblwp-protocol-https-perl set to manually installed.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

>Does /home/httpd/lonTabs/hosts.tab contain:
>winonal1:winona:library:loncapa.winona.edu:https:winona.edu

YES
cat /home/httpd/lonTabs/hosts.tab
^s10.lite.msu.edu
^dalton.chem.sfu.ca
^library1.lon-capa.uiuc.edu
winonal1:winona:library:loncapa.winona.edu:https:winona.edu

>If you can view submissions by other students for the same problem, it might be that this student's submission(s) contain(s) control characters or other non-printable characters, etc. which are causing problems when LON-CAPA makes an internal call to render for the web and answer targets.

> PROBLEM IS PRESENT FOR OTHER STUDENT PROBLEMS/WORK AS WELL
 
> Unless you have your domain configured to disallow hosting of user sessions for users in the winona domain on servers in other LON-CAPA domains, one thing to try to troubleshoot this would, when already logged into loncapa.winona.edu would  be to replace the URL in the browser's address bar with

> loncapa.winona.edu/adm/switchserver?otherserver=<hostID>

> replacing <hostID> with the LON-CAPA hostID of another LON-CAPA server., so you could transfer your LON-CAPA session to a different server to see if the same problem is seen there, when accessing a student's view of

>You could transfer to the MSU "demo server, which has a hostID of msudemol1 if you like, although that server is running 2.11.4, whereas you own server is still on 2.11.3.

WHEN I CHANGED TO THE DEMO SERVER AS ABOVE I WAS ABLE TO SEE STUDENT PROBLEMS VIA THE GRADING SCREEN - THIS WORKED!

>Is encryptedURL set for this problem?
I CAN'T REMEMBER WHERE TO LOOK FOR THIS SETTING.

>Is there a discussion board attached to this problem (with posts from students).
NO POSTS FROM STUDENTS ON THIS PROBLEM