The client was experiencing a repetitive Internal Server Error (server error 500) that occurred frequently. Disabling the WPML plugin or resubmitting the homepage permalink temporarily resolved the issue, but the root cause was unknown.

1. We asked the client to enable debugging mode to check the error logs, following the instructions provided in our documentation: <a href="https://wpml.org/documentation/support/debugging-wpml/">Debugging WPML</a>. 2. We requested temporary admin credentials to access the client\'s development environment to investigate the issue. 3. We advised the client to back up their website before proceeding. 4. We needed FTP access to enable the debug log for the client. 5. The client was instructed to check for the <code>debug.log</code> file in the <code>wp-content</code> folder once the issue reoccurred. 6. Upon reviewing the debug logs provided by the client, we identified that the issue was related to the Object Cache. 7. The solution was to disable the Object Cache via WordPress Dashboard > Settings > Object Cache. If this solution doesn\'t look relevant to your issue, please open a new support ticket by visiting the <a href="https://wpml.org/forums/forum/english-support/">WPML support forum</a>.

repetitive internal error (server error 500) that occurs frequently

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Tagged: Bug

This topic contains 12 replies, has 2 voices.

Last updated by Kor 1 year ago.

Assisted by: Kor.

Author	Posts
December 13, 2023 at 4:03 pm
ayeletY-2	Hi, I am experiencing a repetitive internal error (server error 500) that occurs frequently. It is quite persistent, and I am not fully sure why it is happening. The resolution is simple: I disable the WPML plugin - everything back to normal and the website is reachable! Another resolution way: go to the main homepage and commit its permalink. The underlying root cause is unknown, and it is a persistent issue that I can no longer ignore, as it will happen again soon. My website provides an online service with paying customers, and this issue is causing me to lose existing as well as new visitors.
December 13, 2023 at 4:24 pm
December 13, 2023 at 4:25 pm #15057567
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your patience. Here is the ticket and please let me know how it goes.
December 19, 2023 at 5:54 pm #15095727
ayeletY-2	It happens again on my live site which I don't have debug log. I enabled the debug log on my staging environment where I would like to simulate the issue and provide the debug information needed. WIP. Thanks. -Ayla
December 19, 2023 at 6:52 pm #15096055
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your reply. Alright then, please let me know once you have the debug log for further debugging.
December 20, 2023 at 7:02 am #15098051
ayeletY-2	Hi, It happens on the live website again. I've attached the WP_DEBUG log (please change the ext of the file from jpg to zip). This time, the following URL is unavailable: hidden link As I said before, resubmiting the relevant post/page will resolve this issue but it occurse frequently for any other page/post. It is frastrating and the customers complains. Don't know what to do. This is quite urgent, --Ayla
December 20, 2023 at 7:06 am #15098173
ayeletY-2	I think I've sent the wrong log. Please change the ext this time from .jpg to .txt. thanks, --Ayla
December 20, 2023 at 6:03 pm #15105367
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your reply. I couldn't download the file that you shared. Please copy and paste the logs here https://pastebin.com/ and share the link. Then, I will check what's going on.
December 20, 2023 at 6:50 pm #15105535
ayeletY-2	https://pastebin.com/EPks8gdx
December 21, 2023 at 3:31 pm #15111807
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your reply. Could you please update the Advanced Custom Fields Multilingual plugin to the latest version and then try again and see if it works correctly?
December 21, 2023 at 5:20 pm #15112509
ayeletY-2	Thanks. The ACFM wasn't installed. I installed it (v2.0.5) and enabled it. As a side note - I don't use ACF in my entire site. Ayla
December 22, 2023 at 5:29 am #15114051
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your reply. I apologize for my mistake. I pasted the wrong reply earlier. I've checked your Website and navigated around and I couldn't replicate the "Internal Server Error". Is there anything specific that you do that causes the error? Anyway, I've run some of the options here hidden link and could you try again and see if it works correctly now?
December 22, 2023 at 3:38 pm #15119661
ayeletY-2	Thanks Kor. I'll keep monitor and report back. Thank you.
December 22, 2023 at 4:41 pm #15120003
Kor Supporter Languages: English (English ) Timezone: Asia/Singapore (GMT+08:00)	Thanks for your reply. Alright then, please let me know how it goes.
December 26, 2023 at 3:57 pm #15130436
ayeletY-2	Issue resolved. The issue is the Object Cache. As soon as I went to WordPress Dashboard > Settings > Object Cache and clicked the disable button for the object cache the pages in question worked with no issues even when all WPML plugins were active.