Error: Cannot find module 'ansi-regex'

[frankthepunk]

Hi,

with ng run / npm run / ng help / ng serve / npm start / etc. I get at the terminal following error:
"Error: Cannot find module 'ansi-regex'".

When I try to install ansi-regex, I get this error:

npm ERR! path C:\dev\git...\frontend\node_modules.bin\semver.cmd
npm ERR! code EEXIST
npm ERR! Refusing to delete C:\dev\git...\frontend\node_modules.bin\semver.cmd: ..\agent-base\node_modules\semver\bin\semver symlink target is not controlled by npm C:\dev\git...\frontend\node_modules\semver
npm ERR! File exists: C:\dev\git...\frontend\node_modules.bin\semver.cmd
npm ERR! Move it away, and try again.

npm ERR! A complete log of this run can be found in:
npm ERR! C:\Users\fm...\AppData\Roaming\npm-cache_logs\2018-03-14T14_31_18_023Z-debug.log

Also I tryed to uninstall ansi-regex, but it is'nt possible eather.

Does somebody has a idea to solve that problem?
Would be happy about help.

Frank