Array to string conversion in libinternalMagentoFrameworkDataFormElementImage.php on line 51

I have both problems and I do not know what happened and how I can solve them.

I was only trying to update an image on banner weltpixel slider and then printed this error

[2019-12-26 20:07:00] main.CRITICAL: Exception message: Notice: Array to string conversion in C:wamp64wwwmagento2libinternalMagentoFrameworkDBAdapterPdoMysql.php on line 3096

enter image description here