Throw error if composer has not been run yet
Throw error if composer has not been run yet

prontotype/core-LEGACY,prontotype/core-LEGACY,ThatGuyCND/D8-Twig-Prototype,ThatGuyCND/D8-Twig-Prototype,prontotype/prontotype-LEGACY,prontotype/prontotype-LEGACY,ThatGuyCND/D8-Twig-Prototype