Step 1: Log in to WHMCS Admin
Step 2: Go to Utilities > System >PHP Info
Step 3: Find all values is correct or not according to requirement
Max_execution_time : 200-300
Max_input_vars : 5000
Post_max_size : 5000
Upload_max_filesize : 512M
How to Configure
Step 1: Log in to your Control Panel
Step 2 : Search “MultiPHP INI Editor” or PHP INI
Step 3: find Configure PHP INI basic settings and select location
Step 4: then fill values in the field then apply or save values.
