decrypt Tls 1.2

Hello all,

I'm not able to decrypt TLS 1.2, ciper suite is TLS_RSA_WITH_AES_128_GCM_SHA256.

dissect_ssl enter frame #2 (first time)
association_find: TCP port 18819 found 0000000000000000
packet_from_server: is from server - FALSE
  conversation = 0000000008081160, ssl_session = 0000000008081670
  record: offset = 0, reported_length_remaining = 419
dissect_ssl3_record found version 0x0303(TLS 1.2) -> state 0x10
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 414, ssl state 0x10
association_find: TCP port 18819 found 0000000000000000
packet_from_server: is from server - FALSE
decrypt_ssl3_record: using client decoder
decrypt_ssl3_record: no decoder available
association_find: TCP port 18819 found 0000000000000000
association_find: TCP port 443 found 00000000065E8230
dissect_ssl enter frame #4 (first time)
association_find: TCP port 443 found 00000000065E8230
packet_from_server: is from server - TRUE
conversation = 0000000008081160, ssl_session = 0000000008081670
record: offset = 0, reported_length_remaining = 613
dissect_ssl3_record: content_type 23 Application Data
decrypt_ssl3_record: app_data len 608, ssl state 0x10
association_find: TCP port 443 found 00000000065E8230
packet_from_server: is from server - TRUE
decrypt_ssl3_record: using server decoder
decrypt_ssl3_record: no decoder available

Any idea what is the issue ?