Hello,
I am installing ProjeQtor locally to try it.
I am on MAC OS X in localhost MAMP
I have an error:

max_input_vars=1000 is too small - value should be at least 2000, 4000 recommended - check your php configuration (php.ini)

I do not have this line on the file ini.php
How to do? I tried to add it but I had no success
can you help me?

I don't know about MAMP but it shouldnot be quite different from WAMP and others.
Php.ini should contain max_execution_time, upload_max_filesize and other php parameters.
But important, you must restart php (sometines it requires to restart apache) to take new parameters into account.
By the way, this warning is not major and you may continue with defaut value. It will generate issue only when you will have dozens of lines in real woek allocation screen.

Thank you very much for your answer.

I have another problem, I can not install it.
I have this error message:

SQLSTATE [HY000] [2013] Connection lost to MySQL server when reading the initial communication packet, system error: 0
dsn = mysql: host = 127.0.0.1; port = 3306

I changed the Apache port, the MySql port, but I still have an error.
What are the settings to apply to MAMP?

my default settings:
Apache: 8888
MySQL: 8889

Thank you

You have to define correct port to mysql in parameters.php file