TypeError: Cannot read property 'toString' of null when running mongodb 4.2

[m-weeks]

Not sure if this is fixed in 0.7.0, as that version gives me another error (same as #46).

I am running version 0.6.2 in a docker container, which works fine when running mongodb 4.0 but not 4.2.

My dockerfile looks like the following:

FROM node:12-stretch

RUN apt-get install libkrb5-dev
RUN npm install run-rs@0.6.2 --unsafe-perm -g
CMD ["run-rs","--keep", "-q", "--version", "4.0.0", "--host", "mongo"]

And the output of my container is the following:

Downloading MongoDB 4.2.0
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  109M    0     0  16.0M      0  0:00:06  0:00:06 --:--:-- 17.8M
Copied MongoDB 4.2.0 to '/usr/local/lib/node_modules/run-rs/4.2.0'
Skipping purge
Running '/usr/local/lib/node_modules/run-rs/4.2.0/mongod' [ 27017, 27018, 27019 ]
Restarting replica set...
/usr/local/lib/node_modules/run-rs/node_modules/mongodb-topology-manager/lib/server.js:101
            .toString()
             ^

TypeError: Cannot read property 'toString' of null
    at ChildProcess.<anonymous> (/usr/local/lib/node_modules/run-rs/node_modules/mongodb-topology-manager/lib/server.js:101:14)
    at ChildProcess.emit (events.js:315:20)
    at maybeClose (internal/child_process.js:1021:16)
    at Socket.<anonymous> (internal/child_process.js:443:11)
    at Socket.emit (events.js:315:20)
    at Pipe.<anonymous> (net.js:674:12)

[ptrk8]

@m-weeks I'm encountering the exact same issue as you. Just wondering if manage to resolve it?

Actually, I've resolved it. I think the error is related to this.

I took the advice below:

It looks like simply installing mongo should resolve this issue.

and installed mongodb 4.2.6 and used run-rs with the --mongod flag and it worked without any issues.

[vkarpov15]

I think this is a case where either the download failed or the process was unable to run. We should improve this error message.

[codedavinci]

@vkarpov15 I tested it and the link to download has changed, I forked the project to debug it and I fixed. I could send a pull a request. Btw I've been having the same issue with the version 4.4.1

[m-weeks]

Now that #46 is fixed I figured I would try this with v0.7.3, but the issue still exists

[vorticalbox]

@m-weeks I'm encountering the exact same issue as you. Just wondering if manage to resolve it?

Actually, I've resolved it. I think the error is related to this.

I took the advice below:

It looks like simply installing mongo should resolve this issue.

and installed mongodb 4.2.6 and used run-rs with the --mongod flag and it worked without any issues.

I wouldn't say this is a fix, I don't want to install mongdb to my machine which is why i am using run-rs in the first place.

it fails to start on versions 4.2 or higher, i stopped at 4.1.1

[tayurus]

npm cache clean --force helped me

[joeskeen]

it fails to start on versions 4.2 or higher, i stopped at 4.1.1

Thanks @vorticalbox I was able to change my run-rs to target 4.1.1 to workaround the issue!