With the .maxctrl.cnf file created, having the details like below:

[maxscale@test001 ~]$ cat .maxctrl.cnf
[maxctrl]
--hosts=test001:8989
--user=admin123
--password=password

Note: I have created a user admin123.

Trying to run maxctrl -h <hostname>:8989 -u <user> -p <pass> show maxscale or any commands like show servers, list servers are throwing following error.

example:
====
[maxscale@test001 ~]$ maxctrl -h 127.0.0.1:8989 -u admin123 -p password show maxscale
(node:28803) UnhandledPromiseRejectionWarning: TypeError: undefined is not a function
at /snapshot/maxctrl/lib/common.js
at Object.handler (/snapshot/maxctrl/lib/show.js)
at /snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:9114
at j (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:4993)
at M.applyMiddlewareAndGetResult (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:9083)
at M.runCommand (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:7268)
at Jt.[runYargsParserAndExecuteCommands] (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:56059)
at M.parseAndUpdateUsage (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:8035)
at M.applyBuilderUpdateUsageAndParse (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:7744)
at M.runCommand (/snapshot/maxctrl/node_modules/yargs/build/index.cjs:1:7115)
(Use `maxctrl --trace-warnings ...` to show where the warning was created)
(node:28803) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:28803) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.

If we remove the .maxctrl.cnf file, all commands with maxctrl are working fine.

example:
======
[maxscale@test001 ~]$ mv .maxctrl.cnf .maxctrl.cnf_old
[maxscale@test001 ~]$ maxctrl -h 127.0.0.1:8989 -u admin123 -p password show maxscale
┌──────────────┬──────────────────────────────────────────────────────────┐
│ Version │ 6.2.4 │
├──────────────┼──────────────────────────────────────────────────────────┤
│ Commit │ 6e1317be296490366b7bf11b8e9b1864acc365d6 │
├──────────────┼──────────────────────────────────────────────────────────┤
│ Started At │ Wed, 06 Apr 2022 00:30:16 GMT │
├──────────────┼──────────────────────────────────────────────────────────┤
│ Activated At │ Wed, 06 Apr 2022 00:30:16 GMT │