CmpdReg Salts new salt fails to show server error message

[jmcneil86043]

Expected Behavior

When you open the CmpdReg Salts browser, click Create New Salt and enter a duplicate salt, you should receive an error that the salt exists
The server returns this in errorMsg.responseText
[{"level":"error","message":"Duplicate salt name. Another salt exists with the same name."},{"level":"error","message":"Duplicate salt abbreviation. Another salt exists with the same abbreviation."},{"level":"error","message":"Duplicate salt found in system."}]

It may not be well formatted, but it is clear

Current Behavior

Follow the above steps, then the form clears and shows this
An error occured creating Salt . Please contact support for additional help.

The console shows:
Uncaught TypeError: this.$(...) is not a function
at Object.error (SaltBrowser.js:453:62)
at k (jquery.min.js:2:16920)
at Object.fireWith [as rejectWith] (jquery.min.js:2:17707)
at y (jquery.min.js:2:80829)
at XMLHttpRequest.d (jquery.min.js:2:86374)

Steps to Reproduce

See above

Possible Solution

I can patch a fix like this:
docker-compose exec acas bash
cd /home/runner/build/public/javascripts/src/ServerAPI
vi SaltBrowser.js

search for bv_createSaltErrorMessageHolder

change

return this.$('.bv_createSaltErrorMessageHolder')(errorMsg);

to

return this.$('.bv_createSaltErrorMessageHolder').text(errorMsg.responseText);

I haven't tried this, but I think editing line 336 of SlatBrowser.coffee from
@$('.bv_createSaltErrorMessageHolder') errorMsg
to
@$('.bv_createSaltErrorMessageHolder').text errorMsg.responseText
will make the same change when deployed and compiled

It would be better to format the error message, but it is usable this way