How to handle error (Connection Error) in Windev25

H friends, I am using Windev25 and developed an application for windows with HFSQL database C / S. I hosted the HFSQL container in Synology NAS. The application if working very well but when internet connectivity to NAS fails, the application starts showing a connection lost message and in that error, it shows the path to my HFSQL database along with a port number of NAS which is quite unsafe. I don't want to let users know the location of the HFSQL C / S database at the back end. How can I trap this error to show only the message that internet connectivity has been failed instead of the default "Connection Lost" message of windev.
Ias not able to attach screenshot of my error so I uploaded to imgur:

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Dear

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. Thanks for your valuable suggestion. The "Connection Lost" window appears due to non-connection with HFSQL server seems not to be an error for WD language and so no error info reflected by codes suggested by you.
Rather this window (

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) appears every time when connectivity to HFSQL docker container failes.
You can check my code (

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). The Connection Lost Error starts when code reach to "TableDisplay(Table_sld,taReExecuteQuery)" code and call HFSQL server.
If I know a way to trap this error before it shows default window with link to my server, I want to show just a customized error messgae that "COnnectivity to Server lost. Kindly check internet connectivity" etc.
KIndly see if you can help.

 

Thanks a lot @Daddypunk.

HOnError ("*", hErrConnectionLoss, err) work like a charm where
err is the name of the procedure I called and I put this code in the event
of button click while assessing HFSQL data ...

Thank U.