What OSX version are you using?
Not certain how to fix it, but for theban account...
h2. Manual approaches
The above approaches should be most of what you need to clear and reset problems in Safari; however, if not then you can take more surgical approaches to clearing out Safari’s configuration data and getting the browser up and running again. Keep in mind that this approach will fully reset Safari and clear out your history, local bookmarks, and other settings, so be sure you make a backup of your system before doing this. Then quit Safari, and perform the following steps:
*Remove Safari’s configuration folder:*
1. Open the Go menu in the OS X Finder
2. Hold the Option key and choose the Library option that appears
3. Move the “Safari” folder in here to your desktop
*Remove Safari’s window state:*
1. Open the Library > Saved Application State folder
2. Locate the “com.apple.Safari.savedState” folder
3. Move this folder to the trash
*Remove Safari’s application caches:*
1. Open the Library > Caches folder
2. Locate all folders that begin with “com.apple.Safari”
3. Move these folders to the trash.
*Remove Safari Cookies configurations:*
1. Open the Library > Cookies folder
2. Remove the file called “com.apple.Safari.SafeBrowsing.binarycookies”
*Remove Safari’s preferences:*
1. Open the Library > Preferences folder
2. Remove any file that begins with “com.apple.Safari”
*Remove user plug-ins:*
1. Go to the Library > Internet Plug-Ins folder
2. Move all items from this folder to your Desktop (or elsewhere)
*Remove global plug-ins:*
1. Go to the Macintosh HD > Library > Internet plug-ins folder
2. Move all items out of this folder except the following plug-ins:
Default Browser.plugin iPhotoPhotocast.plugin Quartz Composer.webplugin QuickTime Plugin.plugin
These ones may also be removed for testing your situation, but should be replaced. In addition, if removing plugins does not show any difference in your browser’s behavior, then replace them. However, you can also replace them by downloading the latest versions from their developers’ Web sites.
https://www.macissues.com/2015/06/22/how-to-fully-reset-safari-on-your-mac/
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