解决BUG：Could not resolve placeholder ‘myprops.mysql.url‘ invalue “${myprops.mysql.url}“

Caused by: java.lang.IllegalArgumentException: Could not resolve placeholder ‘myprops.mysql.url’ in value “${myprops.mysql.url}”

Carefully checked that there is no error, it is the problem of application.yml

• Check if the environment is configured

• Check whether the environment name is wrong
  

• Check whether there are fewer spaces before the environment name.
  
  Correct format: