Ramji,
Sorry that you are seeing this issue with CodeMix.
Can you please share with us some more details?
1. Is the engine being disconnected when performing any specific action? Or does it randomly disconnect?
2. I assume you are working with the latest CodeMix version, 2020.7.22. If no, then please update to the latest via Help > Check for Updates and check if the issue persists.
3. Please share with us the .log file located at workspace dir/.metadata/.log (rename the extension to .txt and attach it here)
4. Also share with us the OS and version details along with Eclipse version details if CodeMix is installed on top of Eclipse.
Apologies for inconvenience caused.
–Swapna
Genuitec Support