Extention manager empty after create a new extention


Hello all,
I have a problem on creating new extension,first problem was on file permission . the pimcore try to create a directory on the root directory. then i change the path to special path inside the extension manager from mkdir
.moreover the file creation is successfully done but after the creation still the extension manager is empty does not show the new one and the file is physically created and completed. so any help …

/var/www/pimcore/plugins the physical path of the created plugins

pluginConfigs: Array{“extensions”:[{“id”:“Fghd”,“type”:“plugin”,“name”:"",“description”:"",“installed”:null,“active”:false,“configuration”:"",“updateable”:false,“version”:“1.0”}]}


[Solved] by deleting the white space before each string concatenation.