Problem installing pandas using pip and pip3 (flatpak install)

[usui-natsuo]

I am using Porto installed as a flatpak from flathub. I have not tried the manual install.

If I try to import the pandas module, I get the message:
: No module named 'pandas'

When trying to install pandas with pip or pip3, I get:
�[33mWARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f6e2d3dab50>: Failed to establish a new connection: [Errno -3] Falha temporário na resolução de nome')': /simple/pandas/�[0m �[33mWARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f6e2d3daa00>: Failed to establish a new connection: [Errno -3] Falha temporário na resolução de nome')': /simple/pandas/�[0m �[33mWARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f6e2d3dad60>: Failed to establish a new connection: [Errno -3] Falha temporário na resolução de nome')': /simple/pandas/�[0m �[33mWARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f6e2d3dadf0>: Failed to establish a new connection: [Errno -3] Falha temporário na resolução de nome')': /simple/pandas/�[0m �[33mWARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.HTTPSConnection object at 0x7f6e2d3c2550>: Failed to establish a new connection: [Errno -3] Falha temporário na resolução de nome')': /simple/pandas/�[0m �[31mERROR: Could not find a version that satisfies the requirement pandas (from versions: none)�[0m �[31mERROR: No matching distribution found for pandas�[0m

Thanks for the wonderful work! I'm a huge fan of Porto!