"get an error" is correct and usable in written English.
You can use it when something does not work correctly and produces an unexpected result. For example, "I tried to open the file but I got an error."
If you get an error, then something isn't setup correctly.
You will (likely) get an error saying that the folder "Python" does not exist.
I get an error message saying "Invalid Relocation Data in ASM Program"!
You will get an error saying that Windows cannot find that path.
You get an error when trying to log in to Outlook with single sign-on.
Predicted value of each pixel is subtracted from the actual value of the current pixel to get an error image.
While controlling the heavy data inside the router, then the resultant may chance to get an error.
What should I do if I get an error message that says "ASAP or exec string too long"?
If you get an error message or the version is earlier than 1.7, you MUST (re)install the JDK.
If you get an error message or the version is earlier than 1.8 you MUST (re)install the JDK.
If the certificate is not registered with any of the MaIS applications, you will get an error message.
