- Added more runtime error checkings
- Added more runtime error checkings

felipensp/clever,felipensp/clever,felipensp/clever,felipensp/clever,felipensp/clever,clever-lang/clever,felipensp/clever,clever-lang/clever,clever-lang/clever,clever-lang/clever,clever-lang/clever,clever-lang/clever,felipensp/clever,clever-lang/clever