🚧 μ†Œν™•μ— (μ†Œμ†Œν•˜κ³  ν™•μ‹€ν•œ Err..or..)

1.λ°±/ν”„λ‘ νŠΈ μ„œλ²„ μ—°κ²° μ‹œ CORS μ—λŸ¬

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2.Cannot read properties of undefined ν•΄κ²° 방법

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