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Stabilizing the error: no handles with labels found to put in legend with the best answers
The cause: The cause of the error was using method plt.legend() Solution: You need to change plt.legend() into ax.legend() as the following code: fig = plt.figure() ax = fig.add_subplot(111) ax.spines['left'].set_position('zero') ax.spines['right'].set_color('none') ax.spines['bottom'].set_position(Read more
The cause: The cause of the error was using method
plt.legend()
Solution: You need to change
plt.legend()
intoax.legend()
as the following code:Steps to fix the error “ the authenticity of host can’t be established”
The cause: I think this error occurs if you frequently edit keys, this warning will appear owing to security features; do not disable this feature. This warning only appeared once. If the problem persists after a second connection, the issue is most likely with writing to the known_hosts file. AfterRead more
The cause: I think this error occurs if you frequently edit keys, this warning will appear owing to security features; do not disable this feature. This warning only appeared once. If the problem persists after a second connection, the issue is most likely with writing to the
known_hosts
file. After that, you’ll receive the following message:The solution: To solve this problem you can change the file’s owner or make it writable by your user by fixing the file’s permissions.
The complete guide to the syntaxerror: multiple statements found while compiling a single statement issue
The cause: I think the reason for this is that you can't execute more than one statement at a time in the shell: >>> a = 2 b = 3 SyntaxError: multiple statements found while compiling a single statement The solution: To solve this problem, you must carry them out one by one: >>> aRead more
The cause: I think the reason for this is that you can’t execute more than one statement at a time in the shell:
The solution: To solve this problem, you must carry them out one by one:
Can I fix the “router.use() requires a middleware function but got a object” or not?
The cause: This error happens because of missing router exports module The solution: I think you should use module.exports = router; and that would work
The cause: This error happens because of missing router exports module
The solution: I think you should use
See lessmodule.exports = router;
and that would workError: npm err! cb() never called! – Quick tips
The cause: I think this error happens perhaps because the engine you were using for Node was outdated. The solution: These steps below will help you solve this error: Clear your npm cache: sudo npm cache clean -f Install the latest version of the Node helper: sudo npm install -g n Tell the helper (nRead more
The cause: I think this error happens perhaps because the engine you were using for Node was outdated.
The solution: These steps below will help you solve this error:
sudo npm cache clean -f
sudo npm install -g n
sudo n stable
You will be up to date if you get a progress display
See lessno value accessor for form control with unspecified name attribute – Simple solution when encountering the error
The cause: The cause of this error perhaps is due to using [formControl] instead of [formGroup] The solution: To solve this error, you should change [formControl] to [formGroup] This is a wrong code: @Component({ selector: 'app-application-purpose', template: ` <div [formControl]="formGroup">Read more
The cause: The cause of this error perhaps is due to using
[formControl]
instead of[formGroup]
The solution: To solve this error, you should change
[formControl]
to[formGroup]
This is a wrong code:
I have changed this to the right code as below:
Error: typeerror: __init__() missing 1 required positional argument: ‘on_delete’ – How to solve it?
The cause: This error happens because on delete became a necessary argument in Django 2.0, which was released after version 1.9. The default is CASCADE in previous versions. The solution: To resolve this error, the property categorie of the class Article should be change as the following: categoriRead more
The cause: This error happens because
on delete
became a necessary argument in Django 2.0, which was released after version 1.9. The default is CASCADE in previous versions.The solution: To resolve this error, the property
categorie
of the classArticle
should be change as the following:How to fix “rendered more hooks than during the previous render”
The cause: This error happens because of within the onClick as the setAllResultsVisible is called, it will trigger state change and result on every render The solution: Before setAllResultsVisible, you should change your onlick event add()=> <p onClick={() => setAllResultsVisible(!allResuRead more
The cause: This error happens because of within the
onClick
as thesetAllResultsVisible
is called, it will trigger state change and result on every renderThe solution: Before
setAllResultsVisible
, you should change your onlick event add()=>
Simple solutions for the oserror: [winerror 193] %1 is not a valid win32 application error
The cause: This error happens because the file hello.py is not an executable file. then you have to specify the executable: subprocess.call(['python.exe', 'hello.py', 'htmlfilename.htm']) The solution: To resolve this error you'll need python.exe to be in the search path, or you can specify the enRead more
The cause: This error happens because the file
hello.py
is not an executable file. then you have to specify the executable:The solution: To resolve this error you’ll need
python.exe
to be in the search path, or you can specify the entire path to the executable file running the calling script:Why do I get the trouble “ora-65096: invalid common user or role name”?
The cause: You have to create the database as a container database instead of creating user in the container, i.e. CDB$ROOT, however, i think you should create the user in the PLUGGABLE database. The solution: You can resolve the error by creating a "pluggable user" aka "local user". Local users bRead more
The cause: You have to create the database as a container database instead of creating user in the container, i.e. CDB$ROOT, however, i think you should create the user in the PLUGGABLE database.
The solution: You can resolve the error by creating a “pluggable user” aka “local user”.
Local users belong only to a single PDB. These users may be given administrative privileges, but only for that PDB inside which they exist. For that, you should connect to pluggable datable like that:
and now, you can create user like usually:
See less