XP0 Custom build - empty keys value in connectionstring.config on CM

[kbhdeveloper]

I have developed a custom Sitecore module for Stream. I have followed the appropriate installation procedures and details, but I noticed that the connectionstring.config file contains empty values, including my connection string for Stream.

<?xml version="1.0" encoding="utf-8"?>
<connectionStrings configBuilders="SitecoreConnectionStringsBuilder">
  <!-- 
    Sitecore connection strings.
    All database connections for Sitecore are configured here.
  -->
  <add name="core" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Core"/>
  <add name="security" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Security"/>
  <add name="master" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Master"/>
  <add name="web" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Web"/>
  <add name="messaging" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore.Messaging"/>
  <add name="xdb.processing.pools" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Processing.Pools"/>
  <add name="xdb.referencedata" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_ReferenceData"/>
  <add name="xdb.processing.tasks" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Processing.Tasks"/>
  <add name="experienceforms" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_ExperienceForms"/>
  <add name="exm.master" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_EXM.Master"/>
  <add name="reporting" connectionString="user id=user;password=password;Data Source=(server);Database=Sitecore_Analytics"/>
  <add name="cortex.processing.engine" connectionString="https://Sitecore_xconnect"/>
  <add name="cortex.processing.engine.client.certificate" connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="sitecore.reporting.client" connectionString="https://Sitecore_xconnect"/>
  <add name="sitecore.reporting.client.certificate" connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="solr.search" connectionString="https://localhost:8993/solr"/>
  <add name="sitecoreidentity.secret" connectionString="Set client secret for Sitecore Identity server here."/>
  <add name="xconnect.collection" connectionString="https://Sitecore_xconnect"/>
  <add name="xconnect.collection.certificate" connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="xdb.marketingautomation.operations.client" connectionString="https://Sitecore_xconnect"/>
  <add name="xdb.marketingautomation.operations.client.certificate"
  	connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="xdb.marketingautomation.reporting.client" connectionString="https://Sitecore_xconnect"/>
  <add name="xdb.marketingautomation.reporting.client.certificate"
  	connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="xdb.referencedata.client" connectionString="https://Sitecore_xconnect"/>
  <add name="xdb.referencedata.client.certificate" connectionString="StoreName=My;StoreLocation=CurrentUser;FindType=FindByThumbprint;FindValue="/>
  <add name="EXM.CryptographicKey" connectionString="0x0000000000000000000000000000000000000000000000000000000000000000"/>
  <add name="EXM.AuthenticationKey" connectionString="0x0000000000000000000000000000000000000000000000000000000000000000"/>
  <add name="sitecore.aiclient.stream" connectionString="${Sitecore_ConnectionStrings_sitecore.aiclient.stream}"/>
</connectionStrings>