# Getting TLS certificate error when trying to install Robot Framework in Jython

**URL:** <https://forum.robotframework.org/t/getting-tls-certificate-error-when-trying-to-install-robot-framework-in-jython/492>\
**Category:** Robot Framework\
**Created:** [20 July 2020 08:02 UTC](https://forum.robotframework.org/t/getting-tls-certificate-error-when-trying-to-install-robot-framework-in-jython/492 "2020-07-20T08:02:11Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![Apoorva1](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@Apoorva1](https://forum.robotframework.org/u/Apoorva1)\
**Post date:** [20 July 2020 08:02 UTC](https://forum.robotframework.org/t/getting-tls-certificate-error-when-trying-to-install-robot-framework-in-jython/492/1 "2020-07-20T08:02:11Z")

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Hi,

I have installed Jython 2.7.2 and would want to install Robot Framework in it.  
Tried executing **jython -m pip install robotframework** in C:\Jython2.7.2.  
But received the below error:

Collecting robotframework  
e[31mException:  
Traceback (most recent call last):  
File “ **pyclasspath** /pip/basecommand.py”, line 215, in main  
status = self.run(options, args)  
File “ **pyclasspath** /pip/commands/install.py”, line 324, in run  
requirement\_set.prepare\_files(finder)  
File “ **pyclasspath** /pip/commands/install.py”, line 324, in run  
requirement\_set.prepare\_files(finder)  
File “ **pyclasspath** /pip/req/req\_set.py”, line 376, in prepare\_files  
discovered\_reqs.extend(self.\_prepare\_file(  
File “ **pyclasspath** /pip/req/req\_set.py”, line 376, in prepare\_files  
discovered\_reqs.extend(self.\_prepare\_file(  
File “ **pyclasspath** /pip/req/req\_set.py”, line 551, in \_prepare\_file  
req\_to\_install.populate\_link(  
File “ **pyclasspath** /pip/req/req\_install.py”, line 278, in populate\_link  
self.link = finder.find\_requirement(self, upgrade)  
File “ **pyclasspath** /pip/index.py”, line 465, in find\_requirement  
all\_candidates = self.find\_all\_candidates(req.name)  
File “ **pyclasspath** /pip/index.py”, line 423, in find\_all\_candidates  
for page in self.\_get\_pages(url\_locations, project\_name):  
File “ **pyclasspath** /pip/index.py”, line 568, in \_get\_pages  
page = self.\_get\_page(location)  
File “ **pyclasspath** /pip/index.py”, line 683, in \_get\_page  
return HTMLPage.get\_page(link, session=self.session)  
File “ **pyclasspath** /pip/index.py”, line 788, in get\_page  
resp = session.get(  
File “ **pyclasspath** /pip/index.py”, line 788, in get\_page  
resp = session.get(  
File “ **pyclasspath** /pip/\_vendor/requests/sessions.py”, line 521, in get  
return self.request(‘GET’, url, \*\*kwargs)  
File “ **pyclasspath** /pip/download.py”, line 386, in request  
return super(PipSession, self).request(method, url, \*args, \*\*kwargs)  
File “ **pyclasspath** /pip/\_vendor/requests/sessions.py”, line 508, in request  
resp = self.send(prep, \*\*send\_kwargs)  
File “ **pyclasspath** /pip/\_vendor/requests/sessions.py”, line 618, in send  
r = adapter.send(request, \*\*kwargs)  
File “ **pyclasspath** /pip/\_vendor/cachecontrol/adapter.py”, line 47, in send  
resp = super(CacheControlAdapter, self).send(request, \*\*kw)  
File “ **pyclasspath** /pip/\_vendor/requests/adapters.py”, line 407, in send  
self.cert\_verify(conn, request.url, verify, cert)  
File “ **pyclasspath** /pip/\_vendor/requests/adapters.py”, line 225, in cert\_verify  
raise IOError("Could not find a suitable TLS CA certificate bundle, "  
IOError: Could not find a suitable TLS CA certificate bundle, invalid path: **pyclasspath** /pip/\_vendor/certifi\cacert.peme[0m

I am using:  
Python : 2.7.15  
Jython : 2.7.2  
PIP : 9.0.3

Can anyone help me understand and solve this issue as it is specific to my system and it seems to be working in my colleague’s system.

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<div class="post-metadata">

**Author:** ![Apoorva1](https://avatars.discourse-cdn.com/v4/letter/a/2acd7d/32.png) [@Apoorva1](https://forum.robotframework.org/u/Apoorva1)\
**Post date:** [20 July 2020 08:06 UTC](https://forum.robotframework.org/t/getting-tls-certificate-error-when-trying-to-install-robot-framework-in-jython/492/2 "2020-07-20T08:06:22Z")

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Hi,

Please find the screenshot attached below for reference of what version I have been using for all:

 ![image](https://europe1.discourse-cdn.com/flex005/uploads/robotframework1/original/1X/b0174e14d82c3a1f1a145ff4ee055ef2bc8fc09f.png)