Html Webpack Plugin:
  Error: Child compilation failed:
  Module not found: Error: Can't resolve '/app/node_modules/html-webpack-plugin/  lib/loader.js' in '/app'
  ModuleNotFoundError: Module not found: Error: Can't resolve '/app/node_modules  /html-webpack-plugin/lib/loader.js' in '/app'
      at /app/node_modules/webpack/lib/Compilation.js:2016:28
      at /app/node_modules/webpack/lib/NormalModuleFactory.js:798:13
      at eval (eval at create (/app/node_modules/tapable/lib/HookCodeFactory.js:  33:10), :10:1)
      at /app/node_modules/webpack/lib/NormalModuleFactory.js:270:22
      at eval (eval at create (/app/node_modules/tapable/lib/HookCodeFactory.js:  33:10), :9:1)
      at /app/node_modules/webpack/lib/NormalModuleFactory.js:434:22
      at /app/node_modules/webpack/lib/NormalModuleFactory.js:116:11
      at /app/node_modules/webpack/lib/NormalModuleFactory.js:635:23
      at /app/node_modules/neo-async/async.js:2830:7
      at done (/app/node_modules/neo-async/async.js:2925:13)
  
  - Compilation.js:2016 
    [app]/[webpack]/lib/Compilation.js:2016:28
  
  - NormalModuleFactory.js:798 
    [app]/[webpack]/lib/NormalModuleFactory.js:798:13
  
  
  - NormalModuleFactory.js:270 
    [app]/[webpack]/lib/NormalModuleFactory.js:270:22
  
  
  - NormalModuleFactory.js:434 
    [app]/[webpack]/lib/NormalModuleFactory.js:434:22
  
  - NormalModuleFactory.js:116 
    [app]/[webpack]/lib/NormalModuleFactory.js:116:11
  
  - NormalModuleFactory.js:635 
    [app]/[webpack]/lib/NormalModuleFactory.js:635:23
  
  - async.js:2830 
    [app]/[neo-async]/async.js:2830:7
  
  - async.js:2925 done
    [app]/[neo-async]/async.js:2925:13
  
  - child-compiler.js:169 
    [app]/[html-webpack-plugin]/lib/child-compiler.js:169:18
  
  - Compiler.js:551 finalCallback
    [app]/[webpack]/lib/Compiler.js:551:5
  
  - Compiler.js:577 
    [app]/[webpack]/lib/Compiler.js:577:11
  
  - Compiler.js:1196 
    [app]/[webpack]/lib/Compiler.js:1196:17
  
  
  - Hook.js:18 Hook.CALL_ASYNC_DELEGATE [as _callAsync]
    [app]/[tapable]/lib/Hook.js:18:14
  
  - Compiler.js:1192 
    [app]/[webpack]/lib/Compiler.js:1192:33
  
  - Compilation.js:2787 finalCallback
    [app]/[webpack]/lib/Compilation.js:2787:11
  
  - Compilation.js:3092 
    [app]/[webpack]/lib/Compilation.js:3092:11