'make' fails on 'master' branch

Hello,

I just cloned GitHub - nextcloud/calendar: 📆 Calendar app for Nextcloud and ran ‘make’ on ‘master’ branch.

Here’s the log:

0 info it worked if it ends with ok

1 verbose cli [

1 verbose cli '/home/shashank/Packages/node-v12.18.3-linux-x64/bin/node',

1 verbose cli '/home/shashank/Packages/node-v12.18.3-linux-x64/bin/npm',

1 verbose cli 'run',

1 verbose cli 'build'

1 verbose cli ]

2 info using npm@6.14.10

3 info using node@v12.18.3

4 verbose run-script [ 'prebuild', 'build', 'postbuild' ]

5 info lifecycle calendar@2.1.1~prebuild: calendar@2.1.1

6 info lifecycle calendar@2.1.1~build: calendar@2.1.1

7 verbose lifecycle calendar@2.1.1~build: unsafe-perm in lifecycle true

8 verbose lifecycle calendar@2.1.1~build: PATH: /home/shashank/Packages/node-v12.18.3-linux-x64/lib/node_modules/npm/node_modules/npm-lifecycle/node-gyp-bin:/home/shashank/Projects/personal/calendar/node_modules/.bin:/home/shashank/Packages/node-v12.18.3-linux-x64/bin:/home/shashank/Packages/android-sdk/tools:/home/shashank/Packages/android-sdk/platform-tools:/home/shashank/Packages/android-studio/bin:/usr/share/elasticsearch/bin/:/home/shashank/.cargo/bin:/home/shashank/.config/composer/vendor/bin/:/home/shashank/Packages/spark-2.0.0-bin-hadoop2.7/bin:/home/shashank/Packages/apache-maven-3.3.9/bin:/home/shashank/.local/bin:/home/shashank/.cargo/bin:/home/shashank/Packages/node-v12.18.3-linux-x64/bin:/home/shashank/Packages/android-sdk/tools:/home/shashank/Packages/android-sdk/platform-tools:/home/shashank/Packages/android-studio/bin:/usr/share/elasticsearch/bin/:/home/shashank/.cargo/bin:/home/shashank/.config/composer/vendor/bin/:/home/shashank/Packages/spark-2.0.0-bin-hadoop2.7/bin:/home/shashank/Packages/apache-maven-3.3.9/bin:/home/shashank/.local/bin:/home/shashank/.cargo/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin

9 verbose lifecycle calendar@2.1.1~build: CWD: /home/shashank/Projects/personal/calendar

10 silly lifecycle calendar@2.1.1~build: Args: [ '-c', 'webpack --progress --hide-modules --config webpack.prod.js' ]

11 silly lifecycle calendar@2.1.1~build: Returned: code: 2 signal: null

12 info lifecycle calendar@2.1.1~build: Failed to exec build script

13 verbose stack Error: calendar@2.1.1 build: `webpack --progress --hide-modules --config webpack.prod.js`

13 verbose stack Exit status 2

13 verbose stack at EventEmitter.<anonymous> (/home/shashank/Packages/node-v12.18.3-linux-x64/lib/node_modules/npm/node_modules/npm-lifecycle/index.js:332:16)

13 verbose stack at EventEmitter.emit (events.js:315:20)

13 verbose stack at ChildProcess.<anonymous> (/home/shashank/Packages/node-v12.18.3-linux-x64/lib/node_modules/npm/node_modules/npm-lifecycle/lib/spawn.js:55:14)

13 verbose stack at ChildProcess.emit (events.js:315:20)

13 verbose stack at maybeClose (internal/child_process.js:1021:16)

13 verbose stack at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)

14 verbose pkgid calendar@2.1.1

15 verbose cwd /home/shashank/Projects/personal/calendar

16 verbose Linux 5.4.0-58-generic

17 verbose argv "/home/shashank/Packages/node-v12.18.3-linux-x64/bin/node" "/home/shashank/Packages/node-v12.18.3-linux-x64/bin/npm" "run" "build"

18 verbose node v12.18.3

19 verbose npm v6.14.10

20 error code ELIFECYCLE

21 error errno 2

22 error calendar@2.1.1 build: `webpack --progress --hide-modules --config webpack.prod.js`

22 error Exit status 2

23 error Failed at the calendar@2.1.1 build script.

23 error This is probably not a problem with npm. There is likely additional logging output above.

24 verbose exit [ 2, true ]

Could you please help me understand the problem?

Thanks