I have same issue in ios 13 . but in ios lower version working good. i have not idea what is wrong Here is issue-> PayPal SDK: Request has failed with error: invalid_client - System error (invalid_client). Please try again later. (401) | PayPal Debug-ID: bfc6e1443c40 [mock, PayPal iOS SDK 2.18.1] | Details: ( { "error_description" = "Client Authentication failed"; } i thing its is SDK issue in ios13. please help
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