XAMP MySQL Unexpectedly Shut Down After Site Migration

emperor 3 months ago (sth. or sb) else 35

I am using XAMP to build my sites on localhost. But there is one site that I am backing up using the WPvivid plugin. Every time I do a fresh install of wordpress and then migrate this site, the operation succeeds and works fine for that particular session where I don't stop Apache, MySQL and exit XAMP. But when I exit XAMP, the next session doesn't work. It brings up the "MySQL Unexpected Shutdown Error". I have tested this issue several times over the past few days and it only happened after I restored this old site. Please tell me what I am missing. Need help.