html-pdf: Unknown Error throw new ERR_INVALID_ARG_TYPE(name, 'string', value); Docker

[Shijors]

Error: html-pdf: Unknown Error
internal/validators.js:120
throw new ERR_INVALID_ARG_TYPE(name, 'string', value);
^

TypeError [ERR_INVALID_ARG_TYPE]: The "file" argument must be of type string. Received null
at validateString (internal/validators.js:120:11)
at normalizeSpawnArguments (child_process.js:411:3)
at spawn (child_process.js:547:16)
at Object. (/app/dist/node_modules/phantomjs-prebuilt/bin/phantomjs:22:10)
at Module._compile (internal/modules/cjs/loader.js:999:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
at Module.load (internal/modules/cjs/loader.js:863:32)
at Function.Module._load (internal/modules/cjs/loader.js:708:14)
at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
at internal/main/run_main_module.js:17:47 {
code: 'ERR_INVALID_ARG_TYPE'
}

at ChildProcess.respond (/app/dist/node_modules/html-pdf/lib/pdf.js:134:17)
at ChildProcess.emit (events.js:314:20)
at Process.ChildProcess._handle.onexit (internal/child_process.js:276:12)

My code was

  ```let filePath: string = path.resolve(process.cwd(),"public","downloads",fileName);

await pdf.create(htmlcontent, options).toFile(filePath, (err: Error, response: pdf.FileInfo) => {
if (err){
}
});

[hypo-thesis]

did you ever solve this?