Fixes type issue

Author: RobinBuschmann

lib/services/models.ts

@@ -189,7 +189,7 @@ export function getModels(
 
  return arg.reduce((models: any[], dir) => {
 
- if (!glob.hasMagic(dir) && !hasSupportedExtension(dir)) dir = path.join(dir, '/*');
+ if (!glob.hasMagic(dir) && !hasSupportedExtension(dir)) dir = path.join(dir as string, '/*');
  const _models = glob
  .sync(dir as string)
  .filter(isImportable)