awoke/ official tutorial video lost key command

[ZoomQuiet]

base: Developing with Minifabric: Chaincode - YouTube

the mycc demo:

i guess just the simple:

/opt/proj/minifab
$ tree vars/chaincode/simple/ -L 2
vars/chaincode/simple/
|-- go
|   |-- go.mod
|   |-- go.sum
|   `-- main.go
|-- java
|   |-- build.gradle
|   |-- settings.gradle
|   `-- src
`-- node
    |-- chaincode_example02.js
    `-- package.json

but in the video end, there is combo-command

$ minifab install,approve,commit -n simple -v 2.0 -p '"init","a","200","b","300"'

after this chaincode upgrade command, when i try :

$ minifab invoke -p '"query","b"'

Using default spec file
Minifab Execution Context:

    FABRIC_RELEASE=2.3.0
    CHANNEL_NAME=mychannel
    PEER_DATABASE_TYPE=golevel
    CHAINCODE_LANGUAGE=go
    CHAINCODE_NAME=simple
    CHAINCODE_VERSION=2.0
    CHAINCODE_INIT_REQUIRED=true
    CHAINCODE_PARAMETERS="query","b"
    CHAINCODE_PRIVATE=false
    CHAINCODE_POLICY=
    TRANSIENT_DATA=
    BLOCK_NUMBER=7
    EXPOSE_ENDPOINTS=false
    CURRENT_ORG=org0.example.com
    HOST_ADDRESSES=178.128.91.32,10.15.0.5,10.104.0.2
    WORKING_DIRECTORY: /opt/proj/minifab
    .......
    # Preparing for the following operations: *********************
    verify options, cc invoke
    .......
    # Running operation: ******************************************
    verify options
    .
    # Running operation: ******************************************
    cc invoke
    ..............
    # Run the chaincode invoke script on cli container ************
    non-zero return code
    Error: endorsement failure during invoke. response: status:500 message:"error in simulation: failed to execute transaction 8d80d776f1070d37bca0893d7bd89dad55bfee072be4aa4db5457ab1fbc50dc3: invalid invocation: chaincode 'simple' has not been initialized for this version, must call as init first"

    # STATS *******************************************************
    minifab: ok=33  failed=1

    real    0m15.018s
    user    0m11.808s
    sys     0m2.820s

there is error, need run $ minifab initialize at first,

suggest append the video.

btw:

the built-in command

'ccup' - update or force re-install chaincode as specified version (alias to install,approve,commit,instantiate/initialize).

just the best easy upgrade Chaincode 's commend;

thanx for all