Empty Sessions folder?

[netfrugal]

I get this error in my logs:

PHP Fatal error: session_start(): Failed to initialize storage module: user (path: /var/lib/php/session) in .......

It happens on occasion when I pull up a page on my server. The page will go blank, and then I get that error logged in my server logs.

I've looked for the reason why that may show up, but doesn't seem to be a normal thing.

I know this is where php.ini tells me that the sessions are kept:
/var/lib/php/session

And I notice it is full of sessions, which makes me wonder if I need to empty it out on occasion?

Any ideas?

[YAOMK]

it could be a problem with the permissions set for that directory/file, perhaps it is not set to have read permissions, change this using chmod.