hi All,

I am using TM4C129X MCU + FreeRTOS TCP+ Wolfssll 5.8.4

i am facing -125 error for this api
wolfSSL_CTX_load_verify_buffer(ctx, (const unsigned char*)ca_cert_pem, strlen(ca_cert_pem), WOLFSSL_FILETYPE_PEM);

Her is my user-settings.h file
/*
* user_settings.h
*
*  Created on: 11-Feb-2026
*      Author: chira
*/
#ifndef WOLFSSL_USER_SETTINGS_H
#define WOLFSSL_USER_SETTINGS_H

#ifdef __cplusplus
extern "C" {
#endif

/* ===================================================== */
/* Platform */
/* ===================================================== */
#define FREERTOS_TCP
#define SINGLE_THREADED
#define WOLFSSL_SMALL_STACK
#define WOLFSSL_USER_IO

/* Required for TI CGT */
#define NO_INLINE

/* ===================================================== */
/* TLS Configuration */
/* ===================================================== */

#define WOLFSSL_TLS12
#define WOLFSSL_NO_TLS13

#define NO_OLD_TLS
#define NO_SESSION_CACHE
#define NO_WOLFSSL_SERVER   /* Client only */
#define HAVE_SNI

/* ===================================================== */
/* Disable Unused Crypto */
/* ===================================================== */

//#define NO_RSA
#define NO_DH
#define NO_DSA
#define NO_DES3
#define NO_RC4
#define NO_MD4
#define NO_PSK
#define NO_FILESYSTEM
#define NO_WRITEV

/* ===================================================== */
/* ECC (Only curve secp256r1) */
/* ===================================================== */

#define HAVE_ECC
#define ECC_USER_CURVES
#undef NO_ECC256

#define ECC_SHAMIR
#define ECC_TIMING_RESISTANT

/* ===================================================== */
/* AES */
/* ===================================================== */

#define HAVE_AES_CBC
#define HAVE_AESGCM
#define GCM_SMALL

/* ===================================================== */
/* Hash */
/* ===================================================== */

//#define NO_SHA
/* Keep SHA enabled */
#define NO_MD5
#define WOLFSSL_SHA256

/* ===================================================== */
/* Math */
/* ===================================================== */

#define USE_FAST_MATH
#define TFM_TIMING_RESISTANT
#define FP_MAX_BITS 4096

/* ===================================================== */
/* Memory */
/* ===================================================== */

//#define NO_WOLFSSL_MEMORY   /* use malloc/free */
// #define WOLFSSL_STATIC_MEMORY
// #define WOLFSSL_NO_MALLOC

/* ===================================================== */
/* RNG */
/* ===================================================== */

#define HAVE_HASHDRBG

//extern unsigned int my_rng_seed_gen(void);
//#define CUSTOM_RAND_GENERATE my_rng_seed_gen

/* ===================================================== */
/* Misc */
/* ===================================================== */

#define HAVE_TLS_EXTENSIONS
#define HAVE_SUPPORTED_CURVES

#define HAVE_CERTS
#define WOLFSSL_BASE64_ENCODE
#define WOLFSSL_ASN
#define HAVE_X509

#define WOLFSSL_USER_CURRTIME
#define XTIME time

#ifdef __cplusplus
}
#endif

#endif /* THIRD_PARTY_USER_SETTINGS_H_ */

please guide me where i am getting wrong and also i am attaching my code

Regards
Chiranth Murthy