From your link:

Caused by

    Rise of crude oil prices in 2018[29]
    Fuel tax[30]
    Traffic enforcement cameras[31]
    Austerity measures[32]
    2017 wealth tax repeal[33]
    Opposition to neoliberalism[34][35]

Goals

    Increase of minimum wage in France[36]
    End to austerity measures[37]
    Improved standard of living[37]
    Government transparency and accountability[37]
    Improved government services for rural areas[37]
    42 demands in total[37]
    Constitutional proposal for a citizens' initiative referendum, including constitutional, legislative, abrogative, and recall initiatives[38]