Error "Unrecognized error number: 8192: trim(): Passing null to parameter #1 ($string) of type string is deprecated" - openldap

Consider:
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[Enter image description here][2]
I have installed ldap in ubuntu. When I start phpldap in my browser, this message is shown to me.
I try to change value null in the trim() function, but it's not resolving my problem. How can I resolve the problem?

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having problem for vocab liberary in juypter

for i in range(0, len(messages)):
review= re.sub('[^a-zA-Z]',' ',messages['message'][i])
review=review.lower()
review=review.split()
review=[ps.stem(word) for word in review if not word in stopwords.words('english')]
review=' '.join(review)
corpus.append(review)
above is my code and receiving type error 'cannot use a string pattern on a bytes-like object'
for 2nd line. how to resolve it?

Wordpress-ob_start():failed to create buffer

My website was built with wordpress and now I get the following error:
PHP message: PHP Warning: ob_start(): function '‘ob_gzhandler’' not
found or invalid function name in /var/www/html/wordpress/index.php on
line 15
And this is index.php:
enter image description here
Any idea to fix it?
Try setting the Content-Encoding header.
header('Content-Encoding: gzip');

RMySQL cannot insert new data

I try to insert new data to MySQL using RMySQL. Only for this case I always fail and always get the same warning message. The message was:
Warning message:
In value[[3L]](cond) : corrupt resultSet, missing fieldDescription
Although it just a warning, I never find my data show on MySQL.
Complete code and warning message shown as below:
Please advise any solution.
enter image description here
Oh, Please, don't forget to un-comment library(RMySQL) [ line : 1 ].
&
Please, add query in lieu of "select age from Customers". [ line : 9 ].
:)
Maybe, it'll works fine.
[ Sorry, for my bad English. ]

what is the meaning of this error Couldn't find string in telnet output ()

I am geeting this error message " error Couldn't find string in telnet output () " while running a test plan using TCL.What is the meaning of this error and why i am getting this type of error.
Well, it should mean exactly what it says.
You are expecting a certain string to be returned from the thing you're testing (such as 'login: '), and that string is not appearing (maybe you're getting 'Log In:' instead, for example).
You need to figure out what's actually coming out and adjust your expectations accordingly.

Errors when loading ci-merchant library

I'm trying to use http://ci-merchant.org/ for CodeIgniter. But when I load the merchant library, I get these errors:
A PHP Error was encountered
Severity: Warning
Message: stripos() expects parameter 1 to be string, array given
Filename: libraries/merchant.php
Line Number: 97
A PHP Error was encountered
Severity: Warning
Message: strtolower() expects parameter 1 to be string, array given
Filename: libraries/merchant.php
Line Number: 103
Here is my code:
$this->load->library('merchant');
$this->merchant->load('paypal_express');
Looking at the source of that file, the driver name needs to be passed as a string. So I highly doubt the two lines of code you put above is actually what's being called, it looks like you are passing an array as the driver name.
If you aren't sure where it's coming from, try adding some debug_print_backtrace() lines to the merchant.php file to figure out where the array is getting passed from.

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