Mark Ratledge on "Visual Editor not working. Confilct with Gravity Forms, Yoast SEO, custom theme"

All plugins are up to date. Having a backend issue with latest version of WP, Gravity Forms, Yoast SEO and custom theme. Not sure how to proceed. When Gravity Forms and Yoast SEO are active Visual Editor stops working. Installed twenty-sixteen and then Visual Editor works with plugins activated. So this is a theme issue but is custom theme built by another developer. Not browser specific. Tued on Script debugging. Any suggestions on how to proceed would be so appreciated?

Here is error console results from Firefox:

JQMIGRATE: Migrate is installed with logging active, version 1.4.0 jquery-migrate.js:23:2
JQMIGRATE: 'hover' pseudo-event is deprecated, use 'mouseenter mouseleave' jquery-migrate.js:45:4
console.trace(): jquery-migrate.js:47
migrateWa() jquery-migrate.js:47
hoverHack() jquery-migrate.js:486
jQuery.event.add() jquery-migrate.js:506
sa/<() jquery.js:3
.each() jquery.js:2
n.prototype.each() jquery.js:2
sa() jquery.js:3
.on() jquery.js:3
.delegate() jquery.js:5
<anonymous> qppr_admin_script.min.js:1
n.Callbacks/i() jquery.js:2
n.Callbacks/j.fireWith() jquery.js:2
.ready() jquery.js:2
K() jquery.js:2

JQMIGRATE: jQuery.fn.unload() is deprecated jquery-migrate.js:45:4
console.trace(): jquery-migrate.js:47
migrateWa() jquery-migrate.js:47
jQuery.fn[name]() jquery-migrate.js:525
<anonymous> ajax.min.js:51
n.Callbacks/i() jquery.js:2
n.Callbacks/j.fireWith() jquery.js:2
.ready() jquery.js:2
K() jquery.js:2

Error: no such method 'instance' for menu widget instance
.error()
jquery.js:2
e.widget.bridge/e.fn[i]/<()
jquery-ui-1.10.3.custom.min.js:6
.each()
jquery.js:2
n.prototype.each()
jquery.js:2
e.widget.bridge/e.fn[i]()
jquery-ui-1.10.3.custom.min.js:6
._create()
autocomplete.min.js:11
e.widget/</l[i]</<()
jquery-ui-1.10.3.custom.min.js:6
e.Widget.prototype._createWidget()
jquery-ui-1.10.3.custom.min.js:6
e.widget/e[u][i]()
jquery-ui-1.10.3.custom.min.js:6
e.widget.bridge/e.fn[i]/<()
jquery-ui-1.10.3.custom.min.js:6
.each()
jquery.js:2
n.prototype.each()
jquery.js:2
e.widget.bridge/e.fn[i]()
jquery-ui-1.10.3.custom.min.js:6
.onPostRender()
plugin.js:351
patchedPostRender()
plugin.js:218
i()
tinymce.min.js:8
v.fire()
tinymce.min.js:8
v.postRender()
tinymce.min.js:8
i.exec/<()
tinymce.min.js:8
n()
tinymce.min.js:3
i.each()
tinymce.min.js:8
i.exec()
tinymce.min.js:8
.postRender()
tinymce.min.js:9
s/<()
tinymce.min.js:8
i.exec/<()
tinymce.min.js:8
n()
tinymce.min.js:3
i.each()
tinymce.min.js:8
i.exec()
tinymce.min.js:8
.postRender()
tinymce.min.js:9
s/<()
tinymce.min.js:8
.postRender()
tinymce.min.js:13
s/<()
tinymce.min.js:8
i.exec/<()
tinymce.min.js:8
n()
tinymce.min.js:3
i.each()
tinymce.min.js:8
i.exec()
tinymce.min.js:8
.postRender()
tinymce.min.js:9
s/<()
tinymce.min.js:8
v.renderTo()
tinymce.min.js:8
create()
plugin.js:851
<anonymous>
plugin.js:158
i()
tinymce.min.js:8
.fire()
tinymce.min.js:8
A.prototype.initContentBody()
tinymce.min.js:11
A.prototype.init()
tinymce.min.js:11
t/<()
tinymce.min.js:11
n/this.loadScripts/p/<()
tinymce.min.js:4
n()
tinymce.min.js:3
n/this.loadScripts/p()
tinymce.min.js:4
n/this.loadScripts/p/</<()
tinymce.min.js:4
i()
tinymce.min.js:4
jquery.js:2:1814
JQMIGRATE: jQuery.parseJSON requires a valid JSON string jquery-migrate.js:45:4
console.trace(): jquery-migrate.js:47
migrateWa() jquery-migrate.js:47
jQuery.parseJSON() jquery-migrate.js:269
Xb() jquery.js:4
y() jquery.js:4
.send/c() jquery.js:4