You must ensure that the paper does not involve confidential content, there is no confidentiality problem, and you must abide by relevant laws and regulations.
You need to protect your own copyright and prevent the paper from being stolen or copied by others.
It should be noted that when uploading papers to the platform, you need to comply with the relevant regulations and requirements of schools or periodicals.
In a word, the master's degree thesis can be published online by itself, but it needs to pay attention to related matters to ensure the legitimacy, copyright and confidentiality of the thesis.