HTTP 500 Errors

I haven't seen or hear of this problem. We're using PHP 5.6. You could use git bisect to figure out which commit it causing the problem.

I was having this problem as well; I don't recall if I had just updated webmin or not, although I did run several updates that day. I tracked it down to a few lines in webform_rules.rules.inc.

I'm using PHP 5.6 as well.

I had to make these changes:
if (empty($submission) || !$submission[$first_key]->nid ) {
changed to:
if (empty($submission) || empty(array_values($submission)[0]->nid)) {

I also made a similar change a few lines down:
if(!empty($selection['webform-client-form-' . $submission[$first_key]->nid )){
changed to:
if(!empty($selection['webform-client-form-' . array_values($submission)[0]->nid])){

I'm experiencing the same issue with 7x4-15 and getting intermittent user feedback that they submit the form and get the 500 error. Using PHP 5.6 as well.

I have forms set to email the submissions and do receive the submitted form but the user ends up duplicating the submission because they think it failed.

@vchen - how did you downgrade to 4.14? I wasn't sure if the 4.15 updated the database and would break my forms.

@jeeberpow - I'm not seeing that webform_rules.rules.inc in the webform 4.15 module directory. Where exactly is this file?

Thanks for the update @vchen.

Unfortunately I'm still experiencing it but it's not consistent with the error at all, - I'll try deleting 4.15 on my dev site and replacing with 4.14 and see what happens.

To follow up, I downgraded to version 4.14 and the error disappeared.

It would be great if you could use git bisect to identify the problem commit.