On regtest when you try to send a block for confirmation. I get an error. What could be the problem?
head_block: 564f9e5e207fffff652c29214d9012ced0375ce4a783e3ce0c507187d9146540b4a1f8b5c0a5d68cba23c5b65acabab410f7b24175c38a3d6a49dc16eded18b30996e704485407c2bf4d02f800000002
txs: 0300
coinbase: 020000000001010000000000000000000000000000000000000000000000000000000000000000ffffffff3103cc00004920e7c031d1b90fd6270ca1e1b0b76ceeb552c1ba081013c07496ff6d45e52b010b04658f36232244eb0024b4ffffffff0240f831950000000042002024e4a9707352b05a15f9a2c0137f19f64f176b26ebe36e7d76bab3dde55aa200000000000000004c6a24aa21a9ed574959f5964b70e0bf54900f35d100b8755042d2c1da8e94bf755aa3411adce90120000000000000000000000000000000000000000000000000000000000000000000000000
tx0: 02000000000101b4a280789a22484e02f5b2d3f624e16bb60b9d05da9337bc678f6420cf540ba30000000000fdffffff02e0ce3e0d00000000225120e96eaa7a3def447531eb28b58ff0974974656d599566abb165160a4a0a5d673d80a3af1c01000000225120db9d070fd847cc0c0068f4c7f562874ab442ce105d8eef80fc4df1d6696f92b601400dcd13a372361fb006fadf9abefd9cf016dfe8d32838e986a1c0e34850f191d256cf06a0799a3978b9c7e3e2578dbc5453505137554fd7d8a692a13d3b39957bcb000000
tx1: 020000000001016f1b375ca92ed3d179aa6e210c4a474ee611a9b8a37804114a2e8c90dface1b50000000000fdffffff0260409f0600000000225120ce6e4ceb8f6d5a6b100ae9830c0cb87b6e7e0655940589be6a857a7ff5ee552600324f23010000002251207717106b74ff2b332e0f48d04e8342a7b8c4b7184f554cf9f6cad8bed1a600ed014024877d751eca430065e38b3015ed7c7ce60a837197e92a92d506a3f06d8f1f5937084b19f3166b16e4196aa123c655b9b9ac4ac6788a613c8cbde7cafc6604cfcb000000
{'result': None, 'error': {'code': -22, 'message': 'Block does not start with a coinbase'}, 'id': None}