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An error occurred when launching the external tool:Debug error: Invalid signature

 
Picture of ItsMe Rajan
An error occurred when launching the external tool:Debug error: Invalid signature
 

Using LTI I have created a activity/Resource in https server. If try to access that activity i'm getting following error message. 

An error occurred when launching the external tool:Debug error: Invalid signature. 


Anyone help me to resolve this issue.


I have tried to modify .htaccess file, not able to access the site.

 
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Picture of Robert Schrenk
Re: An error occurred when launching the external tool:Debug error: Invalid signature
Plugin developers

Hello,

I am facing the same problem.

Any LTI-Tools I configured a longer time ago are still working. Only new LTI-Tools show the error, that the signature is invalid.

Anybody having an idea what can be done?

Kind regards

 
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Picture of ItsMe Rajan
Re: An error occurred when launching the external tool:Debug error: Invalid signature
 

Hi,


I am using moodle 4.3+, to resolve this issue I have enabled " $CFG->sslproxy = true; "  in config.php file.


Regards

 
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Picture of Robert Schrenk
Re: An error occurred when launching the external tool:Debug error: Invalid signature
Plugin developers

Thank you, unfortunately it did not solve the problem.

 
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