Canvas error alerted if viewing planner with no Canvas URL inserted

[michaelgira23]

Apparently there's some error on the planner of a user hasn't inserted their canvas url. This should cease.

[aldonovan]

Do you know what specific error it is? I think I remember "Get Canvas Events Error" but I'm not sure

[michaelgira23]

The following is the only thing the front-end displays in the error alert:

Get Canvas Events Error! Try refreshing the page to fix any problems.

Upon further inspection, it looks like https://api.mymicds.net/canvas/get-events is returning a 502 gateway error, typically meaning that the back-end crashed on request. Looking at the back-end logs, the following is thrown:

3|mymicds  | TypeError: Cannot read property 'length' of null
3|mymicds  |     at canvas.getFromCache (/home/apps/MyMICDS/MyMICDS-v2/src/libs/feeds.js:226:12)
3|mymicds  |     at users.get (/home/apps/MyMICDS/MyMICDS-v2/src/libs/canvas.js:384:4)
3|mymicds  |     at userdata.find.toArray (/home/apps/MyMICDS/MyMICDS-v2/src/libs/users.js:51:4)
3|mymicds  |     at handleCallback (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb/lib/utils.js:120:56)
3|mymicds  |     at /home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb/lib/cursor.js:860:16
3|mymicds  |     at handleCallback (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb-core/lib/cursor.js:171:5)
3|mymicds  |     at setCursorDeadAndNotified (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb-core/lib/cursor.js:505:3)
3|mymicds  |     at nextFunction (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb-core/lib/cursor.js:651:7)
3|mymicds  |     at Cursor.next [as _next] (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb-core/lib/cursor.js:692:3)
3|mymicds  |     at fetchDocs (/home/apps/MyMICDS/MyMICDS-v2/node_modules/mongodb/lib/cursor.js:856:10)

Looks like this may be a back-end issue then. After fixing that, it's possible that the error will be fixed. Depends on whether the front-end correctly handles the API request if it works.

[michaelgira23]

MyMICDS/MyMICDS-v2#51 seems to fix the problem.