Maple fungal disease?

[hisseibonsai]

Hello there,
I think my maple has a fungal disease. A black and hard gum emerges from the body. (In pictures) What are your suggestions for these diseases? Which types of mushrooms should I use? Can you write the active ingredient of the fungicide? What should I pay attention to?
Thank you for your help.

 

[Wires_Guy_wires]

Looks like phytohpthora.

 

[bwaynef]

Here's a list of some fungicides that list phytophthora among diseases treated:

actinovate
agriphos
bacillus-amyloliquefaciens
bacillus-subtillis
biophospro
biosafe
chlorothalanil
copper
daconil
gardenphos
mancozeb
mefenoxam
phyton27
phyton35
potassiumsalts-PhosAcid
subdue
zerotol