Error 500 suddenly


I’m using Invoice Plane since the beggining of 2016 and it always worked well, until 3-4 weeks ago. Now, when I try to save anything after having changed a date, an amount, or adding a payment etc… I god an error in the console, saying that :

Failed to load resource: the server responded with a status of 500 (Internal Server Error)

The ressource being :

They weird thing is that I don’t have any memory of having changed anything before the bug appears. I may have upgraded PHP into 7 but I’m not sure if it was exactly at this date (I’m not using the invoice tool every day).

Thanks for helping me !


First of all please follow the description in the FAQ. We can’t help you if you without any logs.
Additionally please check your exact PHP version. PHP 7 is currently not supported by InvoicePlane.


this is a javascript error, as far as I know it’s not related to PHP. And the only log I have is what i’ve pasted in my first post. This is the only error I get.

I’d love to give you more information if you tell me what do you need.

Thanks !

And no, ‘error 500’ is defined as a server-side error which can definitely be no JavaScript but a PHP error.