Problems with requirement.txt when deploying flask app in AWS Elastic Beanstalk - amazon-web-services

Question

I am trying to deploy my web app built with flask in python to elastic beanstalk. This is the first time I use this service and I am trying to upload it from the console of AWDS. However, the log file displays errors with the file requirements.txt, which I created from my local computer by typing "pip freeze > requirements.txt". This created me a 360 lines requirements file (is it not too much?) and the log displays errors like this one all the time like:
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2020/11/10 09:22:02.505005 [ERROR] An error occurred during execution of command [app-deploy] - [InstallDependency]. Stop running the command. Error: fail to install dependencies with requirements.txt file with error Command /bin/sh -c /var/app/venv/staging-LQM1lest/bin/pip install -r requirements.txt failed with error exit status 1. Stderr:ERROR: Could not find a version that satisfies the requirement anaconda-client==1.7.2 (from -r requirements.txt (line 5)) (from versions: 1.1.1, 1.2.2)
ERROR: No matching distribution found for anaconda-client==1.7.2 (from -r requirements.txt (line 5))
2020/11/10 09:22:02.505022 [INFO] Executing cleanup logic
2020/11/10 09:22:02.505119 [INFO] CommandService Response: {"status":"FAILURE","api_version":"1.0","results":[{"status":"FAILURE","msg":"Engine execution has encountered an error.","returncode":1,"events":[{"msg":"Instance deployment failed to install application dependencies. The deployment failed.","timestamp":1605000122,"severity":"ERROR"},{"msg":"Instance deployment failed. For details, see 'eb-engine.log'.","timestamp":1605000122,"severity":"ERROR"}]}]}
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I deleted the entry "anaconda-client==1.7.2" and still does not work. Same problem as well with anaconda-navigator==1.9.12, anaconda-project==0.8.3, Automat==20.2.0... I erased them all but there is always a new wrong requirement.
I guess the requirements.txt file is just wrong... any ideas to solve the problem? Did I
create the requirements.txt correctly? Might it be any kind of problem with the enviroments?
thanks a lot