I have issue with proxy servers - continuous handshake requests

Proxy is not pulling the latest data. we are using PSK, I see a bunch of messages about the handshake, need help with this issue. 

 
:psk identity not found: TLS write fatal alert "unknown PSK identity"
29431:20211229:190642.646 cannot find requested PSK identity "Agent PSK"
29431:20211229:190642.647 failed to accept an incoming connection: from 127.0.0.1: TLS handshake set result code to 1: file s3_srvr.c line 2819: error:1408B0DF:SSL routines:ssl3_get_client_key_exchange:psk identity not found: TLS write fatal alert "unknown PSK identity"
29451:20211229:190643.347 cannot send proxy data to server at "100.83.255.241": negative response "failed"
29430:20211229:190643.648 cannot find requested PSK identity "Agent PSK"
29431:20211229:190643.648 cannot find requested PSK identity "Agent PSK"
29430:20211229:190643.648 failed to accept an incoming connection: from 127.0.0.1: TLS handshake set result code to 1: file s3_srvr.c line 2819: error:1408B0DF:SSL routines:ssl3_get_client_key_exchange:psk identity not found: TLS write fatal alert "unknown PSK identity"
29431:20211229:190643.648 failed to accept an incoming connection: from 10.48.69.228: TLS handshake set result code to 1: file s3_srvr.c line 2819: error:1408B0DF:SSL routines:ssl3_get_client_key_exchange:psk identity not found: TLS write fatal alert "unknown PSK identity"
 
The file exits in the config file and present in the directory 

1. 1. 1. Option: TLSPSKFile
2. Full pathname of a file containing the pre-shared key.
   #
3. Mandatory: no
4. Default:
5. TLSPSKFile=
   TLSPSKFile=/etc/zabbix/zabbix_proxy_pskfile.psk