array_key_exists(): The first argument should be either a string or an integer

[rdhathaliya]

When attempting to install a package with Laravel 5.6, the installation process terminates prematurely with the following error message:

In ServiceProvider.php line 173:
array_key_exists(): The first argument should be either a string or an integer

Context:
I'm trying to install a package within a Laravel 5.6 project, and during the installation process, this error occurs, causing the installation to fail.

Expected Behavior:
I expect the package installation to complete successfully without encountering any errors, allowing me to utilize the functionality provided by the package within my Laravel application.

Steps to Reproduce:

Create a Laravel 5.6 project.
Attempt to install the desired package using Composer.
Observe the error message mentioned above, resulting in a failed installation.
Additional Information:

Laravel Version: 5.6
Package Being Installed: [Name of the package]
Command Used for Installation: composer require [package-name]
Error Context:
The error occurs at line 173 of the ServiceProvider.php file. However, I'm unsure about the specific cause of the error or how to resolve it.

Request for Assistance:
I'm seeking guidance on how to troubleshoot and resolve this error, enabling me to successfully install the package within my Laravel 5.6 project.

Thank you for your assistance!