null check

[vmtkac-coe]

I am getting this error:

npm exec spectaql spectaql.yaml
TypeError: Cannot read properties of null (reading 'slice')
at run (/Users/vincenttkac/sandbox/node_modules/spectaql/dist/spectaql/index.js:136:24)
at run (/Users/vincenttkac/sandbox/node_modules/spectaql/dist/index.js:339:59)

Changed to look like this locally and it fixed it:

136 schemes: [protocol != null ? protocol.slice(0, -1) : 0],