From: Robert Kaiser <kairo@kairo.at>
Date: Sun, 19 Jul 2020 00:16:02 +0000 (+0200)
Subject: create a proper error when we are unable to write the graph file
X-Git-Url: https://git-public.kairo.at/?p=php-utility-classes.git;a=commitdiff_plain;h=461e89f00b4707f05734dbf46fcc3c821f8f7c27;hp=461e89f00b4707f05734dbf46fcc3c821f8f7c27

create a proper error when we are unable to write the graph file
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