"Unable to read LP model" but HiGHS itself works

If I run [this model](https://github.com/lovasoa/highs-js/files/12843086/model.txt) through the demo website, I get a > Error: Unable to read LP model (see http://web.mit.edu/lpsolve/doc/CPLEX-format.htm). HiGHS error yet HiGHS proper (tested with Running HiGHS 1.5.1 [date: 2023-04-19, git hash: be21711c9]) manages to read it just fine (after saving it with an `.lp` extension). Edit: Just tried with HiGHS 1.6.0 off of the current master, and that also works.