[Node CI] failing for NodeJS 8 and 10

[rondinif]

ERROR in Template execution failed: TypeError: Cannot convert undefined or null to object ERROR in TypeError: Cannot convert undefined or null to object

• Function.keys
• loader.js:7 eval [index.pug?.]/[html-webpack-plugin]/lib/loader.js:7:1614
• loader.js:7 template [index.pug?.]/[html-webpack-plugin]/lib/loader.js:7:2165
• index.js:284 Promise.resolve.then [ita-webpack4-labs]/[html-webpack-plugin]/index.js:284:18
• next_tick.js:68 process._tickCallback internal/process/next_tick.js:68:7 Child html-webpack-plugin for "index.html": 1 asset Entrypoint undefined = index.html