Discussion on Multiline files upload for contact form 7 Pro

Discussion on Multiline files upload for contact form 7 Pro

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zluck supports this item


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45 comments found.

Hello, after activating the plugin, I get the Error message in front end: Warning: Trying to access array offset on value of type bool in /htdocs/klostermusik/wp-content/plugins/multiline-files-upload-for-contact-form-7-premium-release-2.2/multiline-files-upload-for-contact-form-7.php on line 341 What can I do to resolve this error? Kind regards, Susan

Hi Susan, please create a support ticket at so we can support you better and we will be also releasing the update here on codeacanyon.


subset Purchased

Hi, I need to display a loader or a message when loading files. How to do please?

Hi subset, sorry for the delay in getting back to you because of weekend. would you raise your support ticket at thanks

Hi, files not coming to email. Hosting support says that they have no problems. Web –

Thanks for purchasing our plugin. Please send support request to and we will help you fixing it.


makkuz Purchased

Hi, we have the follow config of the plugin pro version:

[multilinefile multilinefile-473 minfile:0 maxfile:5 limit:5mb filetypes:gif|png|jpeg|jpg|ico|pdf|doc|docx|ppt|pptx|pps|ppsx|odt|xls|xlsx|psd zipfilelink:false “Durchsuchen…”]

with this shortcode config we can:

- upload single file over 8mb (we have set the limit to 5mb) - upload filetype zip (we dont allow zip in filetypes list)

why the zip upload and filiesize over 8mb is allowed? We dont see an error message or something after form submit!?

What we are doing wrong?

Thanks & best regards…

Hey makkus, would you share more info on, please share the page link where you have installed the form..

we will review and get back to you.

Also for your information, once 3 files are uploaded on the form, in the email you will receive one zip file that consists those 3 files.


proadax Purchased

Hello, we have a problem with the plug. We have it installed on the website The problem is that when we add more than 5 files to all fields, an error appears I greet.

Hello, there can be two problem on the server side. if total number of files exceeding 20, bydefault PHP’s max number of upload file is set to 20.

2nd is max_upload_size in PHP, if all file’s size is more than the allowed file size, it can create problem.

Please check your server settings and increase these two limits. Thanks

proadax Purchased

Hello, we received such a response from the server administrator.

Seems a problem in the plug-in:

Sun May 01 18: 00: 28.313757 2022 pid 20470: tid 139712844973824 mod_fcgid: stderr: PHP Warning: count (): Parameter must be an array or an object that implements Countable in /var/www/vhosts/ -for-contact-form-7.php on line 243, referer:

Please help

Hello, this is a warning, this shouldn’t be creating a problem. Can you disable wordpress debug mode.

Also please download latest 2.0 version from codecanyon and install it.

Hello. I don’t have classes being added. [multilinefile multilinefile-585 maxfile:10 limit:50mb filetypes:gif|png|jpg|jpeg class:uk-button “Прикрепить фото”] The page cache has been cleared.

Hi, we don’t have support of additional classname yet. You can use existing button’s classname to edit the look and feel of upload button Here is the snippet from our doc.

Buttton style: Set automatically the theme button style but you can change using following classname—> .button, .button-primary, .qbutton { background-color: #004834; }

I did, thank you!

Hi dgreenbaum,

Could you please share admin login credentials so i can check further?

Share your credentials to this email –



I activated pro plugin and after that form submission not working. Below are the details.

Please let me know the issue. Free plugin working fine but has an issue with pro.


Hi dgreenbaum,

Could you please share admin login credentials so i can check further?

Share your credentials to this email –


HI. I am experiencing the same problem as creffart (above me) I can upload and receive if the files uploaded are small.

but when I try to send files more than 10Mb the form shows this message: There was an error trying to send your message. Please try again later.

The server file upload limit is set to 256 Mb and I tested it to send to my gmail account but still get the same error Please help.

Below is the server info: Writable wp-content Directory True PHP: Version 7.4 PHP: memory_limit 512M PHP: post_max_size 256M PHP: max_execution_time 3600 PHP: upload_max_filesize 256M PHP: max_input_time 3600 PHP: max_input_vars 10000 PHP: display_errors 0

hello ? no more support for this plugin ?

Hello tslirto, please send your wordpress admin detail and link to the page where contact form is setup, on info(at)zluck(dot)com Thanks

Hey Tstirto, yes your server has enough settings updated but seems your mail server is rejecting the emails with larger attachment, please check with your server support team to allow you to attach more than 10MB in email

Hello! Is there any file size limit? Under 20Mb i get the zip file, but the 27 Mb zip file stays on server. Thanks.

Hello Creffart

There can be two reasons 1. Yes. your server may have limit on max file upload size, you need to increase upload_max_filesize and post_max_size both in PHP 2. There can be limit of email system too, like emails do not allow to send or receive.

Thanks for fast reply. 1. Increased both before, so it can’t be the error. Is there any settings for the email system?

Got it, please check with your mail server, if its being blocked from sending mail-server or receiving-mail-server, you. can try to receive emails on different email providers like gmail, yahoo etc.. to make sure its not the receiving email-server.

Hello there!

It’s me again. We noticed another (small) issue on using the PRO version of your plugin. Would be great if this could be fixed asap?

We are trying to combinate 2 upload fields:

1) Multiple images upload 2) PDF upload

We just noticed that alle files are uploaded correctly whichi is good, but the PDF is not included in the zip file that is attached to the mail to our end client.

Can you please check this screenshot:

You will see clearly, we have 4 files on the upload, 3 images & 1 pdf. However the PDF is not attached to the e-mail or included in the zip file.

Can you please take a look or try to simulate this? Looking forward to your response.

Kind regards Buro 86

There is one more field down there called “mail attachments”, send screenshot of that too.

Hello Zluck, that field is empty now, should we change that?

Yes you need to add [uw-plannen] field there. See our documentation for more info

I just bought the pro version of this plugin to be able to have multiple [multilinefile] fields in the same form.

I have used the free version previously without trouble, but I need to have multiple fields in this case.

If I dont attach any files, the form is sent without problems, but when uploading a file (whether it is one or more), I get this error in my error_log, when I press the submit/send button.

[10-Aug-2021 09:26:11 UTC] PHP Fatal error: Uncaught Error: Call to private method WPCF7_Submission::add_uploaded_file() from context '' in /home/vikteam/public_html/wp-content/plugins/multiline-files-upload-for-contact-form-7-pro/multiline-files-upload-for-contact-form-7.php:456 Stack trace: #0 /home/vikteam/public_html/wp-includes/class-wp-hook.php(303): mfcf7_zl_multilinefile_validation_filter(Object(WPCF7_Validation), Object(WPCF7_FormTag)) #1 /home/vikteam/public_html/wp-includes/plugin.php(189): WP_Hook->apply_filters(Object(WPCF7_Validation), Array) #2 /home/vikteam/public_html/wp-content/plugins/contact-form-7/includes/submission.php(366): apply_filters('wpcf7_validate_...', Object(WPCF7_Validation), Object(WPCF7_FormTag)) #3 /home/vikteam/public_html/wp-content/plugins/contact-form-7/includes/submission.php(60): WPCF7_Submission->validate() #4 /home/vikteam/public_html/wp-content/plugins/contact-form-7/includes/submission.php(25): WPCF7_Submission->proceed() #5 /home/vikteam/public_html/wp-content/plugins/contact-form-7/includes/contact-form.p in /home/vikteam/public_html/wp-content/plugins/multiline-files-upload-for-contact-form-7-pro/multiline-files-upload-for-contact-form-7.php on line 456

Will you please take a look at this?

Thanks in advance!

Hi Patrik

Would you send an email on info(at)zluck(dot)com? so I can send you an updated plugin.


My colleague, Izabella, has sent you an email. Thank you!

Thanks issue fixed, I appreciate if you can leave a review of the support you received. Thanks

Hi, I just purchased the for Contact Form 7 Pro but get a Fatal error when trying to install it. Running Enfold 4.8 and Wordpress 5.7.2. Is this not supported or am I doing something wrong here?

Site tried to install on.

Regards, Roger

Error message: Fatal error: Cannot redeclare mfcf7_zl_admin_notice_activation_hook() (previously declared in /www/webvol4/zr/1i6bxgpuy1wlfkx/ in /www/webvol4/zr/1i6bxgpuy1wlfkx/ on line 31

Hello Technohead

Please disable the free plugin.

Dear Zluck, is the plugin/upload module compatible already with the Contact form 7 – v5.4.1 We don’t get an answer back of you. Thank you for understanding.

Hey buro86, thank you so much for the patience! We are on final stage of testing this plugin, Update should be there by Monday.

Hello. I have bought you Multiline Upload Plugin for Contact Form 7 (Wordpress). I seem to run into an issue. I have set max wile size limit to 4 MB (4000000 bytes) and I have set also the max wile count limit ot 4. For testing purposes I have attached a file larget than 5.2MB and the form was unresponsive when after Submit button pushed. No warning, error, no nothing. Looking in the Website www console and the Network tab have noticed error from my nginx server: 413 – Rewuest Entity too large. My server has a sufficient 5MB limit set, on max file send/upload. Considering that Plugin has max file size setting set to 4MB it should return an error right away and catch it to display proper message? I really need help on this, it is an important part of my companies client communicaiton form. Please help. With regards.

Hi DamAnd, We currently do not have “client-side” validation of file size, its in our future-improvents list, I can’t commit a release date for it as of now, but you can expect it really soon.

Hello Dear Author! My company have just bought your premium plugin after successfully testing the free version and wanting to extend the functionality. Unfortunately I run into an issue regarding compatibility with CF7 (5.4.1). The error is at index.js (an CF7 file) this is what it says:

TypeError: Cannot read property ‘classList’ of null at c (index.js?ver=5.4.1).

In this situation the form cannot be sent correctly. Please If you could help me in solving this issue.

P.S. I have just downloaded Premium plugin from Envato, and it is 1.8 version. On the Support forum I have just read that you have a 2.0 version. How can I access it? Maybe It will solve my issue.


Hello DamAnd We just released an updated version with CF7 5.4.1 compatibility. Would you give it a try and let me know if that worked for you. Thanks


Still no Fix released for the latest version of contact form 7 ?? Meanwhile it’s version 5.4.1…

Our client send us a reminder to fix this.. Hope you can help us out! Thanks!

Hey Buro86, We have fixed and released it. Please download updated version and try it.

Dear, I would need support for the Contact form 7 multi upload form as it’s not functioning and we have bought the PRO version. Who can help me? Big thanks, Dries Van Liefde


We are working on this issue. it can take few days to fix it, meanwhile you can downgrade your CF7 plugin from 5.4 to 5.3.2 and it should start working. You can use “WP Rollback” plugin to see and revert back CF7 plugin to previous version.

We will update you here once the fix is deployed.

Hello Zluck, do you have an update for this? Thanks!

Hey Buro86, We have fixed and released it. Please download updated version and try it.

Hi, we use your multiupload-plugin in our website. Since a while there is an error when sending the form. When i deactivate your plugin the form works as expected. Will there be an update for your plugin, that fixes this problem?

This is what i send to Avada support BEFORE i found out deactivating your plugin solves the problem.

Issue Description:

I installed the Avada Patch #418777 wich should fix form submission error in Contact Form 7. Unfortunately it does not solve the problem. When firing the submit button the icon keeps spinning. Console has 2 Errors:

1. /wp-json/contact-form-7/v1/contact-forms/6/feedback?_locale=user:1 Failed to load resource: the server responded with a status of 500 ()

2. index.js:1 Object additional_errors: Array(0) length: 0 proto: Array(0) code: “internal_server_error”

Best wishes


We are working on this issue. it can take few days to fix it, meanwhile you can download your CF7 plugin from 5.4 to 5.3.2 and it should start working. You can use “WP Rollback” plugin to see and revert back CF7 plugin to previous version.

We will update you here once the fix is deployed.

Hey hebatec, We have fixed compatibility for latest version of CF7 plugin and released it. Please download updated version and try it.

Hello, is the paid version compatible with the 5.7 version of WP because the free version does not work. I have the free version and since I updated WP, it is impossible to send the form when uploading attachments with MultiLine files for Contact Form 7 while with a simple file included in contact form 7 it works fine… Thanks

Hey @allwrite, No, this plugin also doesn’t work. We are updating our plugin to be compatible with latest version of Contact Form 7. We are working on it and will soon share the update.

Hey allwrite, Free & premium both plugins are now updated to be compatible with CF7 5.4


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