TypeError: Cannot read properties of undefined (reading 'split')

[tjkim980702]

node.js Version : v16.9.1
OS : ubuntu 18.04.2 LTS
Express Version : v4.17.1
node-mysql-admin Version : v0.1.8

The following error occurs when using node-mysql-admin.

TypeError: Cannot read properties of undefined (reading 'split')
at login (/data/web/mysql/node_modules/node-mysql-admin/middleware/auth/authcontroller.js:8:45)
at Layer.handle [as handle_request] (/data/web/mysql/node_modules/express/lib/router/layer.js:95:5)
at next (/data/web/mysql/node_modules/express/lib/router/route.js:137:13)
at Route.dispatch (/data/web/mysql/node_modules/express/lib/router/route.js:112:3)
at Layer.handle [as handle_request] (/data/web/mysql/node_modules/express/lib/router/layer.js:95:5)
at /data/web/mysql/node_modules/express/lib/router/index.js:281:22
at Function.process_params (/data/web/mysql/node_modules/express/lib/router/index.js:335:12)
at next (/data/web/mysql/node_modules/express/lib/router/index.js:275:10)
at Function.handle (/data/web/mysql/node_modules/express/lib/router/index.js:174:3)
at router (/data/web/mysql/node_modules/express/lib/router/index.js:47:12)
at Layer.handle [as handle_request] (/data/web/mysql/node_modules/express/lib/router/layer.js:95:5)
at trim_prefix (/data/web/mysql/node_modules/express/lib/router/index.js:317:13)
at /data/web/mysql/node_modules/express/lib/router/index.js:284:7
at Function.process_params (/data/web/mysql/node_modules/express/lib/router/index.js:335:12)
at next (/data/web/mysql/node_modules/express/lib/router/index.js:275:10)
at serveStatic (/data/web/mysql/node_modules/serve-static/index.js:75:16)

How can we deal with this error?