Import error

[RiccardoRiglietti]

What could be a fix for this ImportError?

(base) riccardo@riccardo-Aspire-A317-51G:~$ git clone https://github.com/sairajk/Image-Super-Resolution-Application
Clone in 'Image-Super-Resolution-Application' in corso...
remote: Enumerating objects: 125, done.
remote: Counting objects: 100% (63/63), done.
remote: Compressing objects: 100% (63/63), done.
remote: Total 125 (delta 40), reused 0 (delta 0), pack-reused 62
Ricezione degli oggetti: 100% (125/125), 20.69 MiB | 24.69 MiB/s, fatto.
Risoluzione dei delta: 100% (55/55), fatto.
(base) riccardo@riccardo-Aspire-A317-51G:~$ cd Image-Super-Resolution-Application
(base) riccardo@riccardo-Aspire-A317-51G:~/Image-Super-Resolution-Application$ ls
download.py    preprocess.py  requirements.txt  sr_main_keras.py  vid2frame.py
downsample.py  Readme.docx    screenshots       SR_sample_images
LICENSE        README.md      sr_gui_browse.py  train_best_w.h5
(base) riccardo@riccardo-Aspire-A317-51G:~/Image-Super-Resolution-Application$ python sr_gui_browse.py
Traceback (most recent call last):
  File "sr_gui_browse.py", line 5, in <module>
    from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
ImportError: cannot import name 'NavigationToolbar2TkAgg' from 'matplotlib.backends.backend_tkagg' (/home/riccardo/anaconda3/lib/python3.8/site-packages/matplotlib/backends/backend_tkagg.py)

[RiccardoRiglietti]

My installation is:

(base) riccardo@riccardo-Aspire-A317-51G:~/Image-Super-Resolution-Application$ python
Python 3.8.8 (default, Apr 13 2021, 19:58:26) 
[GCC 7.3.0] :: Anaconda, Inc. on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> 

If I try to install the dependencies I get:

(base) riccardo@riccardo-Aspire-A317-51G:~/Image-Super-Resolution-Application$ pip install requirements.txt 
ERROR: Could not find a version that satisfies the requirement requirements.txt (from versions: none)
HINT: You are attempting to install a package literally named "requirements.txt" (which cannot exist). Consider using the '-r' flag to install the packages listed in requirements.txt
ERROR: No matching distribution found for requirements.txt

Trying with -r flag:

(base) riccardo@riccardo-Aspire-A317-51G:~/Image-Super-Resolution-Application$ pip install -r requirements.txt 
Collecting absl-py==0.1.11
  Using cached absl-py-0.1.11.tar.gz (80 kB)
Collecting alabaster==0.7.10
  Using cached alabaster-0.7.10-py2.py3-none-any.whl (12 kB)
Collecting altgraph==0.15
  Using cached altgraph-0.15-py2.py3-none-any.whl (23 kB)
ERROR: Could not find a version that satisfies the requirement anaconda-client==1.6.5 (from versions: 1.1.1, 1.2.2)
ERROR: No matching distribution found for anaconda-client==1.6.5