Don't crash on invalid language
Don't crash on invalid language

kasko/docs,ProcessOut/documentation,bookiza/docs,bookiza/docs,Ibercheck/api-docs,claylo/api-docs,linchpinio/docs,linchpinio/docs,Ibercheck/api-docs,Ibercheck/api-docs,claylo/api-docs,bookiza/docs,claylo/api-docs,ProcessOut/documentation,ProcessOut/documentation,bookiza/docs,linchpinio/docs