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Fix my Custom Wordpress Backend

I have a custom invoice program programmed through wordpress, it worked well in the beginning, now it's just slow and has a thousand errors!

Who can help me there FAST further?

It is only the backend programmed to the invoice program.

There are now 3-4 errors that need to be fixed.

Everything explained in the attachment as a picture, hopefully understandable.

Kĩ năng: PHP, WordPress, MySQL, HTML, Kiến trúc phần mềm

Về khách hàng:
( 1 Nhận xét ) Bremen, Germany

ID dự án: #33955197

170 freelancer chào giá trung bình€322 cho công việc này

(623 Nhận xét)
8.9
(880 Nhận xét)
9.1
(1325 Nhận xét)
8.7
ahmadayaz

Hi I will Fix your Custom Wordpress Backendm , I'm totally on your end to get started with it, always available to discuss this opportunity, so be rest assured that I will provide you with top-notch work. Just to be Thêm

€230 EUR trong 7 ngày
(322 Nhận xét)
8.6
bdsiddhi

Dear Employer, Hope You are doing well!! • We are professional WordPress/Woo-Commerce Experts. We have been working on WordPress for the last 10+ years & also developed 200+ WP Projects. • I am very much interested & Thêm

€250 EUR trong 7 ngày
(306 Nhận xét)
9.0
r4rony

Hello, I have seen your job post and checked all the attachments for this project. I'm interested to help you to fix the custom WordPress backend error on your website and I will give you 100% work results on time Thêm

€250 EUR trong 7 ngày
(235 Nhận xét)
9.1
(239 Nhận xét)
8.3
raju51279

hi,how r u, can i check ur present site url n if possible give [login to view URL] provide list of changes. Please check recent wordpress websites [login to view URL] (elementor) [login to view URL] (elementor) https://lokal Thêm

€287 EUR trong 5 ngày
(1080 Nhận xét)
8.6
(352 Nhận xét)
8.2
(267 Nhận xét)
8.3
(129 Nhận xét)
8.1
Friends4it

We already have built large scale applications, CRMs, ERPs and huge systems can be found at our website. Like [login to view URL] [login to view URL] [login to view URL] [login to view URL] [login to view URL] https: Thêm

€220 EUR trong 5 ngày
(503 Nhận xét)
8.2
Brightinfotech3

Dear Sir/Mam, Hope, you are doing well...!!! Thanks for sharing your project requirements. I have checked your Job Description. We need to work into your existing website and fix some issues. Can you please send me Thêm

€150 EUR trong 5 ngày
(365 Nhận xét)
7.9
ykarora26

Hello sir, You are looking for Fix my Custom Wordpress Backend . I have read your job description and assure you that I am a perfect fit for the job. I am a senior Designer & Developer having 9+ years of experience in Thêm

€200 EUR trong 7 ngày
(364 Nhận xét)
8.0
(347 Nhận xét)
7.9
dagdya99

Hi, I'm interested to work on your project: Fix my Custom Wordpress Backend , I will start project immediately Please let me know if you require any detailed information. Waiting for your reply Thanks

€100 EUR trong 1 ngày
(568 Nhận xét)
7.9
(396 Nhận xét)
8.1
(223 Nhận xét)
8.4
(566 Nhận xét)
7.8
maxsmith8

Hi There, I can start right away and complete your project successfully. I am a Senior Full-Stack developer with over 8 years of experience . I specialize in Front-End and Back-End web development, ranging from small Thêm

€250 EUR trong 5 ngày
(301 Nhận xét)
8.1