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ruby on rails - No implicit conversion of String into Hash when uploading an image with Carrierwave - Stack Overflow
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Rails | Convert all hash keys from symbol to string (stringify_keys / deep_stringify_keys) #Rails - Qiita
Single quotes inside hash value strings in haml are not escaped · Issue #895 · prettier/plugin-ruby · GitHub
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ActiveSupport 5.2 Can't convert Hash with similar String keys to JSON without losing data · Issue #36861 · rails/rails · GitHub
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