php-intellisense not work

[maruo34]

At one point I just stopped working, I did not put any extensions.
What can be? How do I know what the problem is?

[felixfbecker]

Check the output channel, check the developer console, check whether the extension is still installed, ...

[maruo34]

extension installed and running.
output console clear
Where developer console?

[felixfbecker]

Help > Toggle Developer Tools.
What do you mean with "output console clear"? Is there an output channel for "PHP language server", or is it empty?

[maruo34]

You mean this? "php.validate.executablePath": "C:/openserver7/openserver/modules/php/PHP-7-x64/php.exe"

[felixfbecker]

I cannot reproduce that error (Class Composer\XdebugHandler not found). It works fine for me.

[maruo34]

I do not understand so what's wrong?

[felixfbecker]

I don't know

[maruo34]

where you can download this class?

[felixfbecker]

It should be bundled in the extension (it is for me)

[sunverwerth]

http://php.net/manual/en/ini.core.php#ini.open-basedir

[maruo34]

Thanks, yes the protection from external access.

[tony-sol]

TypeError: mb_strlen() expects parameter 1 to be string, boolean given in C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\felixfbecker\language-server\src\ProtocolStreamWriter.php:72
Stack trace:
#0 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\felixfbecker\language-server\src\ProtocolStreamWriter.php(72): mb_strlen(false)
#1 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\felixfbecker\language-server\src\ProtocolStreamWriter.php(41): LanguageServer\ProtocolStreamWriter->flush()
#2 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\sabre\event\lib\Loop\Loop.php(315): LanguageServer\ProtocolStreamWriter->LanguageServer\{closure}()
#3 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\sabre\event\lib\Loop\Loop.php(233): Sabre\Event\Loop\Loop->runStreams(0)
#4 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\sabre\event\lib\Loop\Loop.php(194): Sabre\Event\Loop\Loop->tick(true)
#5 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\sabre\event\lib\Loop\functions.php(122): Sabre\Event\Loop\Loop->run()
#6 C:\Users\myusername\.vscode\extensions\felixfbecker.php-intellisense-2.2.5\vendor\felixfbecker\language-server\bin\php-language-server.php(50): Sabre\Event\Loop\run()

what is this suppose to be?