Check your "Disk space" and try and free up some space if it is low.
Do not convert local recording files by double-clicking the Zoom files.
Ensure you did not change the filename.
Follow the steps below to convert the files.
The one who schedule and host the session can check the Web Portal.
Click on Recordings > Cloud Recordings or Local Recordings.
It could also be that another participant was actually recording the meeting. Could be another host or another participant that you had granted permission to record. If this is the case, then it will record to their computer.