Update interface.jl

[phipsgabler]

AFAIK, shouldn't throw objects that are not Exceptions.

[codecov]

Codecov Report

Merging #7 (f82c3b9) into master (7c4718a) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master        #7   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            2         2           
  Lines           36        37    +1     
=========================================
+ Hits            36        37    +1     

Impacted Files	Coverage Δ
src/interface.jl	100.00% <100.00%> (ø)

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[oschulz]

Oh, indeed, that's a bug. We forgot to wrap the string in an ArgumentError().

[oschulz]

Thanks @phipsgabler !

[oschulz]

JuliaRegistries/General#48407