MultiChain Developer Q&A - Recent questions tagged errorcode

Explorer cannot load transaction

Thu, 17 Dec 2020 00:54:09 +0000

Dear Team,

I'm working with MC 2.0.2 and last version of explorer. After installing and running with --no-serve I have the following error:

...

block_tx 281 296
block_tx 282 297
Exception at 83395
Failed to catch up {'blkfile_offset': 0, 'blkfile_number': 100000, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/fabio/.multichain/testnet04', 'id': 3}
Traceback (most recent call last):
File "Mce/DataStore.py", line 2903, in catch_up
store.catch_up_dir(dircfg)
File "Mce/DataStore.py", line 3215, in catch_up_dir
store.import_blkdat(dircfg, ds, blkfile['name'])
File "Mce/DataStore.py", line 3347, in import_blkdat
store.import_block(b, chain = chain)
File "Mce/DataStore.py", line 1201, in import_block
tx['tx_id'] = store.import_tx(tx, pos == 0, chain)
File "Mce/DataStore.py", line 2128, in import_tx
store.spent_txout_assets(txin['prevout_hash'], txin['prevout_n'], chain, tx['hash'], pos)
File "Mce/DataStore.py", line 2159, in spent_txout_assets
address = util.hash_to_address_multichain(vers, pubkey_hash, checksum)
File "Mce/util.py", line 171, in hash_to_address_multichain
vh += hash[pos:pos + 5]
TypeError: cannot concatenate 'str' and 'list' objects

This problem is not new. You already suggested a way out here:

https://www.multichain.com/qa/16963/explorer-attributeerror-nonetype-object-attribute-startswith?show=16963#q16963

but in my case it doesn't solve.

Can you help me?

Thanks for your support.

Fabio

Cannot launch explorer - Import SHA 256 error,please help!!!

Tue, 06 Oct 2020 11:26:03 +0000

Hello community,needed some help.Whenever I have done creating all the required files etc and configured in the mc directory whenever I tried to launch the explorer by using python command the following error pops up,Could someone please help me with this,thanks!!

ImportError: No module named Crypto.Hash.SHA256

Explorer-Error "AttributeError: 'NoneType' object has no attribute 'startswith'"

Fri, 06 Dec 2019 09:05:32 +0000

Can u help me to solve this error?

...

block 469 already in chain 1
commit
block 470 already in chain 1
commit
block 471 already in chain 1
commit
block 472 already in chain 1
commit
block 473 already in chain 1
commit
Exception at 174123
Failed to catch up {'blkfile_offset': 173281, 'blkfile_number': 100000, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/Admin/.multichain/chain1', 'id': 16}
Traceback (most recent call last):
  File "Mce/DataStore.py", line 2903, in catch_up
    store.catch_up_dir(dircfg)
  File "Mce/DataStore.py", line 3215, in catch_up_dir
    store.import_blkdat(dircfg, ds, blkfile['name'])
  File "Mce/DataStore.py", line 3347, in import_blkdat
    store.import_block(b, chain = chain)
  File "Mce/DataStore.py", line 1199, in import_block
    tx['tx_id'] = store.import_and_commit_tx(tx, pos == 0, chain)
  File "Mce/DataStore.py", line 2221, in import_and_commit_tx
    tx_id = store.import_tx(tx, is_coinbase, chain)
  File "Mce/DataStore.py", line 1961, in import_tx
    pubkey_id = store.script_to_pubkey_id(chain, txout['scriptPubKey'])
  File "Mce/DataStore.py", line 2819, in script_to_pubkey_id
    script_type, data = chain.parse_txout_script(script)
  File "Mce/Chain/__init__.py", line 247, in parse_txout_script
    return chain.parse_decoded_txout_script(decoded)
  File "Mce/Chain/__init__.py", line 270, in parse_decoded_txout_script
    if len(decoded) >= 6 and decoded[2][1].startswith("spkk"):
AttributeError: 'NoneType' object has no attribute 'startswith'
Abe initialized.
Listening on http://0.0.0.0:2750
Launched background thread to catch up tx every 60.0 seconds

Transaction history not updated in Explorer since a few days.

Wed, 27 Nov 2019 09:33:07 +0000

->See Title.

sudo python -m Mce.abe --config chain1.conf --commit-bytes 100000 --no-serve
Failed to catch up {'blkfile_offset': 0, 'blkfile_number': 1, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/PwCAdmin/.multichain/chain1', 'id': 10}
Traceback (most recent call last):
File "Mce/DataStore.py", line 2899, in catch_up
if not store.catch_up_rpc(dircfg):
File "Mce/DataStore.py", line 3132, in catch_up_rpc
store.import_block(block, chain = chain)
File "Mce/DataStore.py", line 1201, in import_block
tx['tx_id'] = store.import_tx(tx, pos == 0, chain)
File "Mce/DataStore.py", line 1961, in import_tx
pubkey_id = store.script_to_pubkey_id(chain, txout['scriptPubKey'])
File "Mce/DataStore.py", line 2819, in script_to_pubkey_id
script_type, data = chain.parse_txout_script(script)
File "Mce/Chain/__init__.py", line 247, in parse_txout_script
return chain.parse_decoded_txout_script(decoded)
File "Mce/Chain/__init__.py", line 270, in parse_decoded_txout_script
if len(decoded) >= 6 and decoded[2][1].startswith("spkk"):
AttributeError: 'NoneType' object has no attribute 'startswith'

-------------------------------------------------

sudo python -m Mce.abe --config chain1.conf
Failed to catch up {'blkfile_offset': 0, 'blkfile_number': 1, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/PwCAdmin/.multichain/chain1', 'id': 11}
Traceback (most recent call last):
File "Mce/DataStore.py", line 2899, in catch_up
if not store.catch_up_rpc(dircfg):
File "Mce/DataStore.py", line 3132, in catch_up_rpc
store.import_block(block, chain = chain)
File "Mce/DataStore.py", line 1199, in import_block
tx['tx_id'] = store.import_and_commit_tx(tx, pos == 0, chain)
File "Mce/DataStore.py", line 2221, in import_and_commit_tx
tx_id = store.import_tx(tx, is_coinbase, chain)
File "Mce/DataStore.py", line 1961, in import_tx
pubkey_id = store.script_to_pubkey_id(chain, txout['scriptPubKey'])
File "Mce/DataStore.py", line 2819, in script_to_pubkey_id
script_type, data = chain.parse_txout_script(script)
File "Mce/Chain/__init__.py", line 247, in parse_txout_script
return chain.parse_decoded_txout_script(decoded)
File "Mce/Chain/__init__.py", line 270, in parse_decoded_txout_script
if len(decoded) >= 6 and decoded[2][1].startswith("spkk"):
AttributeError: 'NoneType' object has no attribute 'startswith'
Abe initialized.
Listening on http://0.0.0.0:2750
Launched background thread to catch up tx every 60.0 seconds

-------------------------------------------------

https://drive.google.com/file/d/1KYwlwL9Fr0kT5yisseRnfYdykEc1Sa_m/view?usp=sharing
https://drive.google.com/file/d/1G89gJLm5lr7x-3qp19y-gcxjw8GpT1pJ/view?usp=sharing

grant #address connect error code: -5 error message: Invalid address

Mon, 28 Aug 2017 17:59:19 +0000

I am setting up two CentOS VMWare servers to use for my private multichain blockchain. However, after successfullly initializing the blockchain on Server2, I see the wallet address provided on the command prompt. For example:
# multichaind chain1@192.168.29.135:7419

MultiChain 1.0 Daemon (protocol 10008)

Retrieving blockchain parameters from the seed node 192.168.29.135:7419 ...
Blockchain successfully initialized.

Please ask blockchain admin or user having activate permission to let you connect and/or transact:
multichain-cli chain1 grant 18yV9rLuwHkN5UpZRnzpceoWxpVikBoMoADyvK connect
multichain-cli chain1 grant 18yV9rLuwHkN5UpZRnzpceoWxpVikBoMoADyvK connect,send,receive

But when I take the provided address, and try to grant it a connect parameter on Server1, I get this error:
[root@server1 chain1]# multichain-cli chain1 grant 18yV9rLuwHkN5UpZRnzpceoWxpVikBoMoADyvK connect
{"method":"grant","params":["18yV9rLuwHkN5UpZRnzpceoWxpVikBoMoADyvK","connect"],"id":1,"chain_name":"chain1"}

error code: -5
error message:
Invalid address: 18yV9rLuwHkN5UpZRnzpceoWxpVikBoMoADyv

I have tried getting and using new addresses from Server2, but they still provide the same error. I already opened up the port/protocol (e.g., 7419) in my firewall, so I don't know if this is some firewall/security issue -- or something within Multichain I am unaware of. Do I need to reset my chain?

Any help would be great. Thanks.

error and "already exists" handling

Wed, 10 May 2017 08:45:55 +0000

I'm currently working on a nodejs application that uses the multichain-node package.

So far I've always created unique assets through a form by just changing the name like item1, item2, item3, ect, until the chain is so dirty I just replace it.

When it goes live however I obviously need some proper error handling.

I was thinking about catching the "already exists" error when a user clicks submit and show a message on the form. Is there a better way to check whether something like an asset already exists? I'm probably going to have lots of assets, so searching through them with listassets is not really a good option I believe.

Multichain Explorer: No information available about transaction (code -710)

Mon, 27 Mar 2017 19:27:19 +0000

Thanks for reading. As per title this is related to running the Multichain Explorer.

I use VirtualBox on windows 7 followed setup instructions and it works fine.
Problem is when I repeat the same steps and setups on Ubuntu (Trusty64) using the VMs, it fails to run the below command normally. The Chains I created runs fine.
all prerequisites have been installed
checked rpcport value and it matches

I run this:

$python -m Mce.abe --config testchain1.conf --commit-bytes 100000 --no-serve

I get this:

Failed to catch up {'blkfile_offset': 0, 'blkfile_number': 1, 'chain_id': 1, 'loader': u'default', 'conf': None, 'dirname': u'/home/atom/.multichain/testchain1', 'id': 4}
Traceback (most recent call last):
File "Mce/DataStore.py", line 2892, in catch_up
    if not store.catch_up_rpc(dircfg):
File "Mce/DataStore.py", line 3117, in catch_up_rpc
    tx = get_tx(rpc_tx_hash)
File "Mce/DataStore.py", line 2974, in get_tx
    rpc_tx_hex = rpc("getrawtransaction", rpc_tx_hash)
File "Mce/DataStore.py", line 2949, in rpc
    ret = util.jsonrpc(chain_name, url, func, *params)
File "Mce/util.py", line 246, in jsonrpc
    raise JsonrpcException(resp['error'], method, params)
JsonrpcException: getrawtransaction: No information available about transaction (code -710)

The Multichain page itself shows:

A server error occurred.  Please contact the administrator.


Please kindly advise as to the cause and resolution. Thank you so much for your time!!

Please find my relevant files here:
https://drive.google.com/file/d/0Bwa5464d-RbcZm9qMkVYWjhMa0U/view?usp=sharing

Error Code -5 Invalid Permission

Thu, 12 Jan 2017 02:21:39 +0000

When running on a single server and tried using

multichain-cli chain -datadir=.multichain -rpcuser=admin -rpcpassword=admin grant 1Nhn4A9kN7cPrpSCcsA3gibFqpbMQxLxgwW9rm connect,send,receive

I get an error message

{"method":"grant","params":["1Nhn4A9kN7cPrpSCcsA3gibFqpbMQxLxgwW9rm","connect,send,recieve"],"id":1,"chain_name":"chain"}

error code: -5

error message:

Invalid permission

Have not seen anything on this error code....what does it mean?

Error Code - Glossary

Fri, 23 Sep 2016 08:30:26 +0000

Can we have access to error code glossary with description for each?