What causes PHPStorm to hang?

Question

Yii

Good day to all and Happy New Year.
Has anyone experienced phpstorm freezing?
When auto-substituting classes, it hangs tightly, I can’t do anything, it doesn’t react to the cursor, to the keys either.
Here's how in the image, I start writing the name of the class, a dialog box appears and that's it, we've arrived ...

But these are not always such freezes. For example, yesterday there were none, but today I can’t set the class name in the parameters.
If you write the class name as a line 'class' => 'tests\fixtures\UsersFixture', it does not hang, if so 'class' => UsersFixture::class, it hangs.
There are errors in the logs.

ERROR - llij.ide.plugins.PluginManager - PhpStorm 2019.3  Build #PS-193.5233.101
 ERROR - llij.ide.plugins.PluginManager - JDK: 11.0.4; VM: OpenJDK 64-Bit Server VM; Vendor: JetBrains s.r.o 
 ERROR - llij.ide.plugins.PluginManager - OS: Linux 2019-12-31 12:49:34,815 [ 664350]
 ERROR - llij.ide.plugins.PluginManager - Last Action: EditorRight 
 ERROR - llij.ide.plugins.PluginManager - Current Command: // тут пусто

Installed via JetBrains Toolbox 1.16.6207.
As I understand it, jdk is missing, do I need to install it?
Could the missing jdk be the cause of the freezes?
Problem solved. Solution in the answer.

Answer 1

The problem turned out to be in the installed YII2_Support plugin. It is not compatible with version 2019.3 There is a solution
from the author of the plugin . I reinstalled the plugin that I downloaded from the link above. The problem is gone.