Error: Invalid number at 1: % (code: 37)

[thakurakhilesh]

Environment
Ubuntu 18.04.3 LTS
NodeJs: 12.0.0
pdfj": "^2.4.1"
pdf-merger-js: "^3.0.5"

I am getting below issue:

Error: Invalid number at 1: % (code: 37)
    at Lexer._error (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/parser/lexer.js:128:11)
    at Lexer.readNumber (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/parser/lexer.js:156:16)
    at Function.parse (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/object/object.js:43:22)
    at parseObject (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/object/reference.js:84:31)
    at PDFReference.get [as object] (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/object/reference.js:15:17)
    at ExternalDocument._countPagesRecursively (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/external.js:31:24)
    at ExternalDocument._countPagesRecursively (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/external.js:34:18)
    at ExternalDocument._countPagesRecursively (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/external.js:34:18)
    at new ExternalDocument (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdfjs/lib/external.js:26:27)
    at PDFMerger._addEntireDocument (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdf-merger-js/index.js:29:15)
    at PDFMerger.add (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/pdf-merger-js/index.js:11:12)
    at LoansController.mergePdfFilesPoc (/var/www/html/auditpro/avantha-audit-pro-api/dist/loans/loans.controller.js:68:20)
    at /var/www/html/auditpro/avantha-audit-pro-api/node_modules/@nestjs/core/router/router-execution-context.js:37:29
    at InterceptorsConsumer.transformDeffered (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/@nestjs/core/interceptors/interceptors-consumer.js:30:28)
    at /var/www/html/auditpro/avantha-audit-pro-api/node_modules/@nestjs/core/interceptors/interceptors-consumer.js:14:48
    at Observable._subscribe (/var/www/html/auditpro/avantha-audit-pro-api/node_modules/rxjs/internal/observable/defer.js:10:21)

passed pdf is valid. correctly opening in browser. I am using "is-pdf-valid": "^0.0.1" package to check pdf is valid or not. This package returns true that means pdf is valid.

Please guide me, how I solve this issue?

[mojoaxel]

This is an issue in the pdfjs library. Please create an issue over there with the pdf file attached.

[nicoschtein]

@thakurakhilesh have you solved it yet?

[GabrielSchambakler]

@nicoschtein i solved this using the pdf-flatten package (https://www.npmjs.com/package/pdf-flatten)

var pdfMerger = new PDFMerger();
let fileBuffer = fs.readFileSync(pdfPath);
fileBuffer = await flattener.flatten(fileBuffer);
pdfMerger.add(fileBuffer);