How do I fix ‘Bad protocol version identification’ errors?

I’m a beginner at using SSH, and I’m trying to connect to a VM from a tablet using an app. The app says that it connects successfully, but soon, it loses the connection to the server.
I have installed OpenSSH, and when I check the systemctl status, I receive the following log:
Bad Protocol Version Identification ‘0.0,0.0,0.0,0.0,
Bad Protocol Version Identification ‘0.0,0.0,0.0,0.0,

Accepted password from [my VM username] from 127.0.0.1 port 58982 ssh2
Bad Protocol Version Identification ‘0.0,0.0,0.0,0.0,
Bad Protocol Version Identification ‘0.0,0.0,0.0,0.0,
I’ve set a port redirect already, but it’s not working. I wonder if it’s an issue with the app or with my SSH settings.
Any help is appreciated.

SEO optimization errors

Hello everybody..

I get many errors in my website in website who check SEO optimization, Like

https://www.digitalpoint.com/
https://www.digitalpoint.com

what is the different?

I get

  • Description Duplicates
  • H1 Duplicates
  • Title Duplicates
  • Canonical ≠ URL

All these violations on the home page only, how can I solve these problems.

Probability of detecting errors in codewords

I have been struggling with the below question for quite some time, and I don’t have a pointer to move forward.

A certain Error Control Coding scheme using block codes takes an input block (dataword) of 500 bits and appends a 50 bit code to produce a 550 bit codeword which is then transmitted across channel that causes individual bits to flip with a probability of 0.1 independently. The pairwise Hamming distances between all the codeword pairs is so large that the probability of an error occurring that converts one to the other can be neglected, except as follows: two codewords C 1 and C 2 have a Hamming distance of 10, and two codewords C 3 and C 4 have a Hamming distance of 6. Assuming no knowledge about what datawords may be more or less likely to be desired to transmit, what is the probability that a given block transmission will be corrupted by the channel but the error will go undetected by the receiver? You may answer with an expression, but the answer has to be completely numerical (no symbols). 

My thought process about this question is that the probability needs to be calculated as such : Pr(Selecting either C1 or C2) * P(error in C1 or C2) + Pr(Selecting either C3 or C4) * P(error in C3 or C4).
I feel the Pr(error) is given by a binomial distribution of 55CX(0.1)^x(0.9)^550-x where X=10 or 6.

First, am I thinking about the problem correctly ? If yes , how do i derive the probability of selection fo a particular codeword ?

Post-terms-order Console errors after update

i have an issue after updating the last WP version. now i have this errors on my dashboard:

t_Terms_Order_Walker::walk($ elements, $ max_depth) should be compatible with Walker::walk($ elements, $ max_depth, …$ args) in /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_walkers.php on line 135

Warning: Cannot modify header information – headers already sent by (output started at /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_interface-class.php:25) in /home/c4ddwork/staging/2/wp-includes/functions.php on line 5946

Warning: Cannot modify header information – headers already sent by (output started at /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_interface-class.php:25) in /home/c4ddwork/staging/2/wp-admin/includes/misc.php on line 1252

Warning: Cannot modify header information – headers already sent by (output started at /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_interface-class.php:25) in /home/c4ddwork/staging/2/wp-admin/admin-header.php on line 9

Warning: Cannot modify header information – headers already sent by (output started at /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_interface-class.php:25) in /home/c4ddwork/staging/2/wp-includes/option.php on line 958

Warning: Cannot modify header information – headers already sent by (output started at /home/c4ddwork/staging/2/wp-content/plugins/post-terms-order/include/pto_interface-class.php:25) in /home/c4ddwork/staging/2/wp-includes/option.php on line 959


when i deactivate post-terms-order plugin, all theses errors disappear.

Can anyone help me please!

Thank you

Display form errors on small screen. Scroll to error vs errors by submit button

I’m working on improving error visibility on our form. We display errors next to the field and highlight the tab containing errors. Which works well on desktops above a certain resolution. But on mobile or small laptops errors aren’t always visible.

This screen shot below of the form contains errors but are only visible when scrolling up.

Mobile View

mobile view


Actual Page

enter image description here

Should I display errors beside the save/submit button or scroll to the area/tab that needs correction?

WordPress php mysql errors – errcode: 13 permission denied

I’m developing a WordPress based website using the latest XAMPP release from Oct 9 2019 with Apache 2.4.41, MySQL/MariaDB 10.4.8 and php 7.3.10 using localhost on a Windows 10 machine.

Since updating XAMPP I have been besieged with errors similar to the following:

PHP Warning: mysqli_query(): (HY000/6): Error on delete of ‘C:\xampp\tmp#sql35b0_ee_0.MAI’ (Errcode: 13 "Permission denied") in C:\xampp\htdocs\amc\wp-includes\wp-db.php on line 2007

WordPress database error Error on delete of ‘C:\xampp\tmp#sql35b0_ee_0.MAI’ (Errcode: 13 “Permission denied”) for query SHOW FULL COLUMNS FROM wp_options made by wp_reschedule_event, wp_schedule_event, _set_cron_array, update_option

I have checked the permissions of \xampp\tmp 50 times and authenticated users, system, administrators and users all have full control. I have also deleted WordPress and the associated data base and data tables several times yet the error on delete permission errors continue.

I’m seriously at a loss so any help would be greatly appreciated.

Thanks in advance

WordPress php mysql errors – errcode: 13 permission denied

I’m developing a WordPress based website using the latest XAMPP release from Oct 9 2019 with Apache 2.4.41, MySQL/MariaDB 10.4.8 and php 7.3.10 using localhost on a Windows 10 machine.

Since updating XAMPP I have been besieged with errors similar to the following:

PHP Warning: mysqli_query(): (HY000/6): Error on delete of ‘C:\xampp\tmp#sql35b0_ee_0.MAI’ (Errcode: 13 "Permission denied") in C:\xampp\htdocs\amc\wp-includes\wp-db.php on line 2007

WordPress database error Error on delete of ‘C:\xampp\tmp#sql35b0_ee_0.MAI’ (Errcode: 13 “Permission denied”) for query SHOW FULL COLUMNS FROM wp_options made by wp_reschedule_event, wp_schedule_event, _set_cron_array, update_option

I have checked the permissions of \xampp\tmp 50 times and authenticated users, system, administrators and users all have full control. I have also deleted WordPress and the associated data base and data tables several times yet the error on delete permission errors continue.

I’m seriously at a loss so any help would be greatly appreciated.

Thanks in advance

Sql Server – Multiple errors regarding to memory in error log

MSSQL-Server 2017 Express Edition runs on my Linux server.
The server has 4GB RAM.
The total size of DB is 300MB.

My website and the sqlserver are on the same server, it’s a small website with max of 400-300 visitors a day. Memory usage in linux looks fine, mssql takes only 20% memory:

enter image description here

Some additional sql memory information:
enter image description here

Maximum server memory is set to 2147483647 which is the default I guess.

The errors I get:

enter image description here enter image description here

After restarting the mssql-service there are no problems for something like 2 days and then it repeats it self.

I would happily get an answer that will solve this for me, but I would also like to get a resource where I can learn about memory allocation/cache/pages/ related to sql server because I am not a sql expert, I am a programmer.

Constant console errors in SharePoint Online

I just finished building my first SharePoint Online page. Just a simple page with a few standard web parts (image, news, document library, list, events, file embed). Everything seems to work okay (except for what appears to be a margin-right CSS issue on the news web part) but I’m getting a nonstop trickle of console errors coming in the longer I stay on the page.

For example, I’m in Chrome and did a fresh reload of the page when starting to type up this question, and in 2-3 minutes I’m up to 85 errors and 12 warnings. The errors are all over the place from

Warning! Use of this tool exposes you to potential security threats which can result in others gaining access to your personal Office 365 data (documents, emails, conversations and more). Make sure you trust the person or organization that asked you to access this tool before proceeding.

warning security threat

to mixed content errors related to a browser.pipe.aria.microsoft.com:

Mixed Content: The page at ” was loaded over HTTPS, but requested an insecure XMLHttpRequest endpoint ”. This request has been blocked; the content must be served over HTTPS.

to errors that seem to be related to the PowerPoint embed I have:

Access to XMLHttpRequest at ‘https://browser.pipe.aria.microsoft.com/ping’ from origin ‘https://powerpoint.officeapps.live.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on the requested resource.

Given my level of experience with SharePoint (literally nonexistent), I wouldn’t be totally surprised if I’m doing something wrong but given that I haven’t used any custom web parts or done any other theming, I’m a little perplexed as to what it could be.

Is it normal to get all these console errors?