express session is failing because session is undefined

[nikitakogan1994]

Hi,

I am working with expressjs session as part of my application.
Sometimes, when a logout occurs, the code is trying to reload the session which is 'undefined' by then.

Is it possible to have a fix to check if the session is not 'undefined'? the failure is coming from the express-session code. (index.js line 387) It causes the crash of our application...

stack trace:
Exit status 1
var _reload = sess.reload
at /home/vcap/app/node_modules/express-session/index.js:387:11
^
at /home/vcap/app/node_modules/express-session/session/session.js:94:23
TypeError: Cannot read properties of undefined (reading 'reload')
at /home/vcap/app/node_modules/@sap/approuter/lib/backend-request/memstore.js:134:59
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
/home/vcap/app/node_modules/express-session/index.js:381
at wrapmethods (/home/vcap/app/node_modules/express-session/index.js:381:26)
at /home/vcap/app/node_modules/@sap/approuter/lib/backend-request/memstore.js:262:5
Node.js v18.17.1

[UlisesGascon]

Hey @nikitakogan1994! Thanks for reporting this error... can you provide some code about the bug so we can reproduce it?

[nikitakogan1994]

Hi, the problem is that the issue is happening only sometimes, with no clear pattern. (besides the fact that a logout happened).
Do you have any idea on how to reproduce? or just make sure that the code will not crash?

[rage28]

We are also facing the same issue. Will try to get more info and post here