Hyperledger, blockchain explorer launching fails. Can't connect to mychannel - hyperledger-fabric

Question

By using this tutorial i have downloaded fabric's files by this command:
sudo curl -sSL https://raw.githubusercontent.com/hyperledger/fabric/main/scripts/bootstrap.sh| sudo bash -s
I have added sudo because docker commands in my system can only work in that way.
After that, I went to directory fabric-samples/test-network and started fabric:
sudo ./network up
It started successfully. Then I have created channel:
sudo ./network createChannel
Which gave me this result:
Channel 'mychannel' joined
After that I have uploaded chaincode of asset-transfer-basic like this:
sudo ./network.sh deployCC -ccn basic -ccp ../asset-transfer-basic/chaincode-go -ccl go
Then I have created separate folder explorer and used these commands:
sudo wget https://raw.githubusercontent.com/hyperledger/blockchain- explorer/main/examples/net1/config.json
sudo wget https://raw.githubusercontent.com/hyperledger/blockchain-explorer/main/examples/net1/connection-profile/test-network.json -P connection-profile
sudo wget https://raw.githubusercontent.com/hyperledger/blockchain-explorer/main/docker-compose.yaml
sudo cp -r ../fabric-samples/test-network/organizations/ .
The docker-compose.yaml was changed into this:
volumes:
- ./config.json:/opt/explorer/app/platform/fabric/config.json
- ./connection-profile:/opt/explorer/app/platform/fabric/connection-profile
- ./organizations:/tmp/crypto
- walletstore:/opt/explorer/wallet
Then on test-network.json I have changed these fields into these:
"adminPrivateKey": {
"path": "/tmp/crypto/peerOrganizations/org1.example.com/users/Admin#org1.example.com/msp/keystore/priv_sk"
},
"peers": ["peer0.org1.example.com"],
"signedCert": {
"path": "/tmp/crypto/peerOrganizations/org1.example.com/users/Admin#org1.example.com/msp/signcerts/Admin#org1.example.com-cert.pem"
}
After all of this, I launched it by command sudo docker-compose up I get that kind of error in explorer:
[2022-04-21T16:32:34.374] [INFO] FabricConfig - FabricConfig, this.config.channels mychannel
2022-04-21T16:32:34.630Z - error: [DiscoveryService]: send[mychannel] - Channel:mychannel received discovery error:access denied
[2022-04-21T16:32:34.631] [ERROR] FabricClient - Error: DiscoveryService: mychannel error: access denied
at DiscoveryService.send (/opt/explorer/node_modules/fabric-common/lib/DiscoveryService.js:363:11)
at processTicksAndRejections (internal/process/task_queues.js:97:5)
at async NetworkImpl._initializeInternalChannel (/opt/explorer/node_modules/fabric-network/lib/network.js:279:13)
at async NetworkImpl._initialize (/opt/explorer/node_modules/fabric-network/lib/network.js:231:9)
at async Gateway.getNetwork (/opt/explorer/node_modules/fabric-network/lib/gateway.js:330:9)
Why access denied? Did I miss something?

Answer 1

I'm going to answer for my own question. I hope it will help somebody. The solution of this problem was pretty simple (it's slightly embarrassing)
I needed to set proper volumes in this part:
volumes:
- walletstore:/opt/explorer/wallet
Should be
volumes:
- /path/to/somewhere:/opt/explorer/wallet
It couldn't connect to my channel because it couldn't assign wallet files.