'npm install' fails in appium folder

[sosnovsky]

I tried to run npm install in appium folder, but it failed with error:

npm ERR! code ERESOLVE
npm ERR! ERESOLVE unable to resolve dependency tree
npm ERR! 
npm ERR! While resolving: flowcrypt-appium@1.0.0
npm ERR! Found: @wdio/cli@7.16.4
npm ERR! node_modules/@wdio/cli
npm ERR!   dev @wdio/cli@"7.16.4" from the root project
npm ERR! 
npm ERR! Could not resolve dependency:
npm ERR! peer @wdio/cli@"^6.0.1" from @wdio/local-runner@6.10.13
npm ERR! node_modules/@wdio/local-runner
npm ERR!   dev @wdio/local-runner@"6.10.13" from the root project
npm ERR! 
npm ERR! Fix the upstream dependency conflict, or retry
npm ERR! this command with --force, or --legacy-peer-deps
npm ERR! to accept an incorrect (and potentially broken) dependency resolution.