Have tried changing the node/npm version still getting the same error, this was installing properly on local environment, but not on Azure web app.

Please help.

scrypt@6.0.3 preinstall D:\home\site\wwwroot\node_modules\scrypt
node node-scrypt-preinstall.js

scrypt@6.0.3 install D:\home\site\wwwroot\node_modules\scrypt
node-gyp rebuild

D:\home\site\wwwroot\node_modules\scrypt>if not defined npm_config_node_gyp (node "D:\Program Files (x86)\npm\5.6.0\node_modules\npm\node_modules\npm-lifecycle\node-gyp-bin\....\node_modules\node-gyp\bin\node-gyp.js" rebuild ) else (node "D:\Program Files (x86)\npm\5.6.0\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" rebuild )
Warning: Missing input files:
D:\home\site\wwwroot\node_modules\scrypt\build..\scrypt\win\include\config.h
Building the projects in this solution one at a time. To enable parallel build, please add the "/m" switch.
D:\home\site\wwwroot\node_modules\scrypt\build\copied_files.vcxproj(20,3): error MSB4019: The imported project "D:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk.
D:\home\site\wwwroot\node_modules\scrypt\build\scrypt_wrapper.vcxproj(20,3): error MSB4019: The imported project "D:\Microsoft.Cpp.Default.props" was not found. Confirm that the path in the declaration is correct, and that the file exists on disk.
gyp ERR! build error
gyp ERR! stack Error: D:\Program Files (x86)\MSBuild\14.0\bin\msbuild.exe failed with exit code: 1
gyp ERR! stack at ChildProcess.onExit (D:\Program Files (x86)\npm\5.6.0\node_modules\npm\node_modules\node-gyp\lib\build.js:258:23)
gyp ERR! stack at emitTwo (events.js:126:13)
gyp ERR! stack at ChildProcess.emit (events.js:214:7)
gyp ERR! stack at Process.ChildProcess._handle.onexit (internal/child_process.js:198:12)
gyp ERR! System Windows_NT 10.0.14393
gyp ERR! command "D:\Program Files (x86)\nodejs\8.11.1\node.exe" "D:\Program Files (x86)\npm\5.6.0\node_modules\npm\node_modules\node-gyp\bin\node-gyp.js" "rebuild"
gyp ERR! cwd D:\home\site\wwwroot\node_modules\scrypt
gyp ERR! node -v v8.11.1
gyp ERR! node-gyp -v v3.6.2
gyp ERR! not ok
�[37;40mnpm �[30;43mWARN tigereum-bc-api@1.0.0 No repository field.

�[37;40mnpm �[31;40mERR! code ELIFECYCLE
�[37;40mnpm �[31;40mERR! errno 1
�[37;40mnpm �[31;40mERR! scrypt@6.0.3 install: node-gyp rebuild
�[37;40mnpm �[31;40mERR! Exit status 1
�[37;40mnpm �[31;40mERR!
�[37;40mnpm �[31;40mERR! Failed at the scrypt@6.0.3 install script.
�[37;40mnpm �[31;40mERR! This is probably not a problem with npm. There is likely additional logging output above.

�[37;40mnpm �[31;40mERR! A complete log of this run can be found in:
�[37;40mnpm �[31;40mERR! D:\local\Temp\monacositeextension\temp_logs\2018-05-16T10_51_59_087Z-debug.log