orbitdb demo hello node --version v11.3.0/v11.9.0

Lock FcntlFlock of /Users/iulia.mogos/workspace/test-orbit/orbitdb/orbitdb/ipfs/repo.lock failed: EINVAL, Invalid argument
/usr/local/lib/node_modules/orbit-db-cli/node_modules/yargs/yargs.js:1101
else throw err
^

Error: Command failed: node "/usr/local/lib/node_modules/orbit-db-cli/src/bin" create /orbitdb/demo docstore
Error: Lock FcntlFlock of /Users/iulia.mogos/workspace/test-orbit/orbitdb/orbitdb/ipfs/repo.lock failed: EINVAL, Invalid argument

at checkExecSyncError (child_process.js:621:11)
at execSync (child_process.js:658:13)
at CLI (/usr/local/lib/node_modules/orbit-db-cli/src/cli.js:6:10)
at Object.exports.handler (/usr/local/lib/node_modules/orbit-db-cli/src/commands/demo.js:33:19)
at Object.runCommand (/usr/local/lib/node_modules/orbit-db-cli/node_modules/yargs/lib/command.js:235:44)
at Object.parseArgs [as _parseArgs] (/usr/local/lib/node_modules/orbit-db-cli/node_modules/yargs/yargs.js:1014:30)
at Object.get [as argv] (/usr/local/lib/node_modules/orbit-db-cli/node_modules/yargs/yargs.js:957:21)
at Object. (/usr/local/lib/node_modules/orbit-db-cli/src/bin.js:15:3)
at Module._compile (internal/modules/cjs/loader.js:722:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:733:10)