Netlify dev is crashing

Hi, netlify dev is crashing with a following error (svelte+sapper+postcss+tawilwindcss; no functions; one redirect):
`
maciej:~/Code/konstytucja.online: netlify dev
◈ Netlify Dev ◈
◈ Starting Netlify Dev with sapper
Waiting for localhost:3000.

konstytucja.online@0.0.1 dev /home/maciej/Code/konstytucja.online
postcss static/css/tailwind.css -o static/css/global.css && sapper dev

:heavy_check_mark: client (5.8s)
:heavy_check_mark: server (5.8s)

Listening on http://localhost:3000
:heavy_check_mark: service worker (26ms)
.
Connected!
TypeError [ERR_INVALID_ARG_TYPE]: The “path” argument must be of type string. Received undefined
at createRewriter (/usr/lib/node_modules/netlify-cli/src/utils/rules-proxy.js:61:10)
at startProxy (/usr/lib/node_modules/netlify-cli/src/commands/dev/index.js:167:26)
at async DevCommand.run (/usr/lib/node_modules/netlify-cli/src/commands/dev/index.js:476:34)
at async DevCommand._run (/usr/lib/node_modules/netlify-cli/node_modules/@oclif/command/lib/command.js:44:20)
at async Config.runCommand (/usr/lib/node_modules/netlify-cli/node_modules/@oclif/config/lib/config.js:160:9)
at async Main.run (/usr/lib/node_modules/netlify-cli/node_modules/@oclif/command/lib/main.js:21:9)
at async Main._run (/usr/lib/node_modules/netlify-cli/node_modules/@oclif/command/lib/command.js:44:20)
`

hi there, thanks for this. the best way to report a bug/crash is to file an issue here:

thanks!