Hyperledger Composer Incompatible versions error and the versions are the same

I also faced the same problem and found an issue ..

Problem

while executing below command got an error composer-rest-server -c admin@airlinev8 -p 3000

Nitishs-MacBook-Pro:fabric-dev-servers nitishbhushan$ composer-rest-server -c admin@airlinev8 -p 3000 Discovering types from business network definition ... Connection fails: Error: Error trying to ping. Error: Composer runtime (0.19.9) is not compatible with client (0.19.8) It will be retried for the next request. Exception: Error: Error trying to ping. Error: Composer runtime (0.19.9) is not compatible with client (0.19.8) Error: Error trying to ping. Error: Composer runtime (0.19.9) is not compatible with client (0.19.8)

solution

step 1: check version of composer-cli and composer-rest-server composer-cli - 0.19.9 composer-rest-server - 0.19.8

step2: install latest version of composer-rest-server npm install composer-rest-server -g

After this step, I ran the command again and it worked :-)

You need to install the same version everywhere.In your case if it is 0.8.0 then make everything same with the command as below.

npm install -g composer-cli@0.8.0 --save
npm install -g composer-admin@0.8.0 --save
npm install -g composer-common@0.8.0 --save

...like wise.

You can also try with the following.

sudo npm install -g composer-rest-server@0.8.0

cheers!