Bootstrap Validation in node.js + exxpress

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(node:36827) UnhandledPromiseRejectionWarning: ValidationError: Company validation failed: slug: Pole `slug` jest wymagane, name: Pole `name` jest wymagane
    at model.Document.invalidate (/home/vbert/Sites/html/node-js/chapter_8/node_modules/mongoose/lib/document.js:2879:32)
    at /home/vbert/Sites/html/node-js/chapter_8/node_modules/mongoose/lib/document.js:2670:17
    at /home/vbert/Sites/html/node-js/chapter_8/node_modules/mongoose/lib/schematype.js:1267:9
    at processTicksAndRejections (internal/process/task_queues.js:77:11)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:36827) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:36827) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.