[mbed-tls] Please, help me about Mbedtls_ssl_handshake return error -0x2700

Hello. I am facing the issue of certificate verification error during handshake.The problem is described by me in the appropriate section of the forum.   https://forums.mbed.com/t/mbedtls-failing-with-the-certificate-is-not-correc...   Please help me figure it out - there is no one else to turn to.   Sincerely, Shabrov Dmitry