🐛 Bug Report

When trying to read an excel files with "/
/" tags (for instance on multi row text within a button), ExcelJS crash with the following error

Error: 43:10: unexpected close tag.
at SaxesParser.makeError ( --- node_modules/saxes/saxes.js:410:16)
at SaxesParser.fail (--- node_modules/saxes/saxes.js:422:26)
at SaxesParser.closeTag (--- node_modules/saxes/saxes.js:2019:18)
at SaxesParser.sCloseTag (--- node_modules/saxes/saxes.js:1605:18)
at SaxesParser.write (--- node_modules/saxes/saxes.js:481:36)
at module.exports (---  node_modules/exceljs/lib/utils/parse-sax.js:21:17)

In short this is due to XML code that is accepted by Excel but refused by the saxes parser (typically unclosed tags)

Lib version: 3.10.0 or higher (tested up to 4.3.0). Seems to work on 3.9.0, since the issue comes from saxes that was introduced in replacement of sax-js (see comment below).

Steps To Reproduce

Import this file bugged.xlsx

const workbook = new Workbook();
workbook.xlsx.load(file);

The expected behaviour:

File should be loaded without crashing.

Related issue

##1316 previously reported the bug without further details.

Possible solution

See below