PDF.js stack trace

gistfile1.txt

Warning: Unsupported feature "unknown"
pdf.worker.js:235 Warning: Ignoring invalid character "33" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "111" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "121" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "112" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "109" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "108" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "109" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "108" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "33" in hex string
2pdf.worker.js:235 Warning: Ignoring invalid character "45" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "106" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "81" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "117" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "114" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "121" in hex string
2pdf.worker.js:235 Warning: Ignoring invalid character "45" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "115" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "114" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "105" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "112" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "115" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "114" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "61" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "34" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "108" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "105" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "47" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "106" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "113" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "117" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "114" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "121" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "45" in hex string
3pdf.worker.js:235 Warning: Ignoring invalid character "46" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "109" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "105" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "110" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "46" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "106" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "115" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "34" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "47" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "115" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "114" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "105" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "112" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "33" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "111" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "121" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "112" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "109" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "108" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "116" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "109" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "108" in hex string
pdf.worker.js:235 Warning: Ignoring invalid character "104" in hex string
pdf.worker.js:250 Error: Invalid XRef stream header
pdf.worker.js:252     at error (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:252:15)
    at Object.XRef_readXRef [as readXRef] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:4116:13)
    at Object.XRef_parse [as parse] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:3712:28)
    at Object.PDFDocument_setup [as setup] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:2948:17)
    at Object.PDFDocument_parse [as parse] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:2835:12)
    at chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:2407:26
    at LocalPdfManager_ensure [as ensure] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:2402:12)
    at LocalPdfManager.BasePdfManager_ensureDoc [as ensureDoc] (chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:2338:19)
    at chrome-extension://npdcechigbeelaknnhogoaoohbgdgiep/lib/pdf.worker.js:33020:22
pdf.worker.js:235 Warning: Unsupported feature "unknown"
pdf.worker.js:235 Warning: Indexing all PDF objects

Did this issue ever get resolved? If so, how?

For PHP, try adding ob_clean(); before you echo/output the pdf