To reindex this file IDEA has to be restarted

Hello, I am trying to test a plugin that I have developed. It was developed some month ago, so I back to implement it and tests on current IDEA (U) fails.

Error while indexing C:\Temp2\unitTest_getTraitContainingClass\unitTest\resources-tests\utils\PhpClassUtil.traitClasses.php
To reindex this file IDEA has to be restarted
java.lang.NullPointerException
 at com.jetbrains.php.lang.PhpFileViewProvider$1.createTemplateText(PhpFileViewProvider.java:215)
 at com.intellij.psi.templateLanguages.TemplateDataElementType.createTemplateFile(TemplateDataElementType.java:136)
 at com.intellij.psi.templateLanguages.TemplateDataElementType.parseContents(TemplateDataElementType.java:87)

I have tried:

• Fully reinstall of IDEA (U) without imports my configs, and resetup project IML;
• Invalidate IDEA cache;
• Deleted the .IntelliJIdea2017.3\system\plugins-sandbox folder;

I have tried two differents projects (one my and another is the PHP EA). Both give me the same warning and tests fails. Some tests pass. The tests that fails uses the "configureByFile()" method.

Nothing of that resolves my problem.