ACAS-783: Fix package import error and message printing

Description

Fixes this error when opening an experiment in LiveDesign:

[acas] [ACAS] 2024-06-24T21:05:46.778Z error: 'Caught exception: RangeError [ERR_HTTP_INVALID_STATUS_CODE]: Invalid status code: NaN\n' +
[acas]   '    at ServerResponse.writeHead (node:_http_server:352:11)\n' +
[acas]   '    at ServerResponse.writeHead (/home/runner/build/node_modules/on-headers/index.js:44:26)\n' +
[acas]   '    at ServerResponse.writeHead (/home/runner/build/node_modules/on-headers/index.js:44:26)\n' +
[acas]   '    at ServerResponse._implicitHeader (node:_http_server:338:8)\n' +
[acas]   '    at write_ (node:_http_outgoing:945:9)\n' +
[acas]   '    at ServerResponse.end (node:_http_outgoing:1056:5)\n' +
[acas]   '    at writeend (/home/runner/build/node_modules/express-session/index.js:270:22)\n' +
[acas]   '    at Immediate.onsave (/home/runner/build/node_modules/express-session/index.js:348:11)\n' +
[acas]   '    at process.processImmediate (node:internal/timers:480:21)'

The bug Python3.11 upgrade caused an import error Ignoring ImportError: cannot import name 'SNIMissingWarning' from 'urllib3.exceptions' (/home/runner/.local/lib/python3.11/site-packages/urllib3/exceptions.py) which triggered a print() statement at the beginning of the script which went to stdout rather than stderr. Which eventually lead to the nodejs code to try and interpret the error output line as the return status code and led to a NaN error above.

The fixes

Print import errors to stderr
Fix the import error by removing SNIMissingWarning which is not longer available and isn't necessary anyway.

Related Issue

ACAS-783

How Has This Been Tested?

Ran open in LiveDesign after applying the fixes and verified the LiveReport was opened successfully.

mcneilco / acas