When I do npm install i get the following error:
npm install
Joplin@1.0.216 postinstall /home/arsh/openSource/joplin/ElectronClient
npm run build && gulp electronRebuild
Joplin@1.0.216 build /home/arsh/openSource/joplin/ElectronClient
patch-package --patch-dir ../patches && gulp build
patch-package 6.2.0
Applying patches...
htmlparser2@4.1.0 
sax@1.2.4
[18:27:12] Using gulpfile ~/openSource/joplin/ElectronClient/gulpfile.js
[18:27:12] Starting 'build'...
[18:27:12] Starting 'compileScripts'...
[18:27:12] Starting 'compilePackageInfo'...
[18:27:12] Starting 'copyPluginAssets'...
[18:27:12] Starting 'copyTinyMceLangs'...
[18:27:12] Starting 'copyLib'...
Copying to /home/arsh/openSource/joplin/ElectronClient/tools/../gui/note-viewer/pluginAssets
Copying /home/arsh/openSource/joplin/ElectronClient/tools/../../Modules/TinyMCE/langs => /home/arsh/openSource/joplin/ElectronClient/tools/../node_modules/tinymce/langs
[18:27:12] Finished 'compileScripts' after 19 ms
[18:27:12] Finished 'compilePackageInfo' after 20 ms
[18:27:12] Finished 'copyLib' after 56 ms
Copying to /home/arsh/openSource/joplin/ElectronClient/tools/../pluginAssets
[18:27:12] Finished 'copyTinyMceLangs' after 79 ms
[18:27:12] Finished 'copyPluginAssets' after 85 ms
[18:27:12] Finished 'build' after 87 ms
[18:27:13] Using gulpfile ~/openSource/joplin/ElectronClient/gulpfile.js
[18:27:13] Starting 'electronRebuild'...
Running: "/home/arsh/openSource/joplin/ElectronClient/tools/../node_modules/.bin/electron-rebuild"
[18:27:14] 'electronRebuild' errored after 1.12 s
[18:27:14] Error: Command failed: "/home/arsh/openSource/joplin/ElectronClient/tools/../node_modules/.bin/electron-rebuild"
- Searching dependency tree
Rebuild Failed
An unhandled error occurred inside electron-rebuild
make: Entering directory '/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/build'
ACTION deps_sqlite3_gyp_action_before_build_target_unpack_sqlite_dep Release/obj/gen/sqlite-autoconf-3300100/sqlite3.c
/bin/sh: 1: python: not found
make: *** [deps/action_before_build.target.mk:13: Release/obj/gen/sqlite-autoconf-3300100/sqlite3.c] Error 127
make: Leaving directory '/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/build'
gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/home/arsh/openSource/joplin/ElectronClient/node_modules/node-gyp/lib/build.js:194:23)
gyp ERR! stack at ChildProcess.emit (events.js:310:20)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
gyp ERR! System Linux 5.4.0-31-generic
gyp ERR! command "/usr/bin/node" "/home/arsh/openSource/joplin/ElectronClient/node_modules/.bin/node-gyp" "rebuild" "--target=8.2.5" "--arch=x64" "--dist-url=https://www.electronjs.org/headers" "--build-from-source" "--module_name=node_sqlite3" "--module_path=/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/lib/binding/electron-v8.2-linux-x64" "--host=https://mapbox-node-binary.s3.amazonaws.com" "--remote_path=./{name}/v4.1.1/{toolset}/" "--package_name=electron-v8.2-linux-x64.tar.gz"
gyp ERR! cwd /home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3
gyp ERR! node -v v12.16.3
gyp ERR! node-gyp -v v6.1.0
gyp ERR! not ok
Failed with exit code: 1
Error: make: Entering directory '/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/build'
ACTION deps_sqlite3_gyp_action_before_build_target_unpack_sqlite_dep Release/obj/gen/sqlite-autoconf-3300100/sqlite3.c
/bin/sh: 1: python: not found
make: *** [deps/action_before_build.target.mk:13: Release/obj/gen/sqlite-autoconf-3300100/sqlite3.c] Error 127
make: Leaving directory '/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/build'
gyp ERR! build error
gyp ERR! stack Error: make failed with exit code: 2
gyp ERR! stack at ChildProcess.onExit (/home/arsh/openSource/joplin/ElectronClient/node_modules/node-gyp/lib/build.js:194:23)
gyp ERR! stack at ChildProcess.emit (events.js:310:20)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:275:12)
gyp ERR! System Linux 5.4.0-31-generic
gyp ERR! command "/usr/bin/node" "/home/arsh/openSource/joplin/ElectronClient/node_modules/.bin/node-gyp" "rebuild" "--target=8.2.5" "--arch=x64" "--dist-url=https://www.electronjs.org/headers" "--build-from-source" "--module_name=node_sqlite3" "--module_path=/home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3/lib/binding/electron-v8.2-linux-x64" "--host=https://mapbox-node-binary.s3.amazonaws.com" "--remote_path=./{name}/v4.1.1/{toolset}/" "--package_name=electron-v8.2-linux-x64.tar.gz"
gyp ERR! cwd /home/arsh/openSource/joplin/ElectronClient/node_modules/sqlite3
gyp ERR! node -v v12.16.3
gyp ERR! node-gyp -v v6.1.0
gyp ERR! not ok
Failed with exit code: 1
at SafeSubscriber._error (/home/arsh/openSource/joplin/ElectronClient/node_modules/spawn-rx/lib/src/index.js:267:84)
at SafeSubscriber.__tryOrUnsub (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:205:16)
at SafeSubscriber.error (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:156:26)
at Subscriber._error (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:92:26)
at Subscriber.error (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:72:18)
at MapSubscriber.Subscriber._error (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:92:26)
at MapSubscriber.Subscriber.error (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:72:18)
at SafeSubscriber._next (/home/arsh/openSource/joplin/ElectronClient/node_modules/spawn-rx/lib/src/index.js:242:65)
at SafeSubscriber.__tryOrUnsub (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:205:16)
at SafeSubscriber.next (/home/arsh/openSource/joplin/ElectronClient/node_modules/rxjs/internal/Subscriber.js:143:22)
at ChildProcess.exithandler (child_process.js:303:12)
at ChildProcess.emit (events.js:310:20)
at ChildProcess.EventEmitter.emit (domain.js:505:15)
at maybeClose (internal/child_process.js:1021:16)
at Process.ChildProcess._handle.onexit (internal/child_process.js:286:5)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! Joplin@1.0.216 postinstall: npm run build && gulp electronRebuild
npm ERR! Exit status 1
npm ERR!
npm ERR! Failed at the Joplin@1.0.216 postinstall script.
npm ERR! This is probably not a problem with npm. There is likely additional logging output above.
npm ERR! A complete log of this run can be found in:
npm ERR! /home/arsh/.npm/_logs/2020-05-26T12_57_14_517Z-debug.log